1402145400 has 96 divisors (see below), whose sum is σ = 4380076800. Its totient is φ = 371030400.

The previous prime is 1402145399. The next prime is 1402145449. The reversal of 1402145400 is 45412041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69681 + ... + 87519.

It is an arithmetic number, because the mean of its divisors is an integer number (45625800).

Almost surely, 2^1402145400 is an apocalyptic number.

1402145400 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 1402145400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190038400).

1402145400 is an abundant number, since it is smaller than the sum of its proper divisors (2977931400).

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

1402145400 is a wasteful number, since it uses less digits than its factorization.

1402145400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17989 (or 17980 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1402145400 is about 37445.2320062248. The cubic root of 1402145400 is about 1119.2600874000.

Adding to 1402145400 its reverse (45412041), we get a palindrome (1447557441).

The spelling of 1402145400 in words is "one billion, four hundred two million, one hundred forty-five thousand, four hundred".