1402520740 has 48 divisors (see below), whose sum is σ = 3153654000. Its totient is φ = 522063872.

The previous prime is 1402520731. The next prime is 1402520741. The reversal of 1402520740 is 470252041.

It can be written as a sum of positive squares in 8 ways, for example, as 92659876 + 1309860864 = 9626^2 + 36192^2 .

It is a super-2 number, since 2×1402520740² = 3934128852260295200, which contains 22 as substring.

1402520740 is a Rhonda number in base 12.

It is not an unprimeable number, because it can be changed into a prime (1402520741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7086 + ... + 53434.

It is an arithmetic number, because the mean of its divisors is an integer number (65701125).

Almost surely, 2^1402520740 is an apocalyptic number.

1402520740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402520740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576827000).

1402520740 is an abundant number, since it is smaller than the sum of its proper divisors (1751133260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1402520740 is a wasteful number, since it uses less digits than its factorization.

1402520740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46464 (or 46462 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1402520740 is about 37450.2435239078. The cubic root of 1402520740 is about 1119.3599499870.

Adding to 1402520740 its reverse (470252041), we get a palindrome (1872772781).

The spelling of 1402520740 in words is "one billion, four hundred two million, five hundred twenty thousand, seven hundred forty".