1402504140 has 24 divisors (see below), whose sum is σ = 3927011760. Its totient is φ = 374001088.

The previous prime is 1402504121. The next prime is 1402504141. The reversal of 1402504140 is 414052041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1402504141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11687475 + ... + 11687594.

It is an arithmetic number, because the mean of its divisors is an integer number (163625490).

Almost surely, 2^1402504140 is an apocalyptic number.

1402504140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402504140 is an abundant number, since it is smaller than the sum of its proper divisors (2524507620).

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

1402504140 is a wasteful number, since it uses less digits than its factorization.

1402504140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23375081 (or 23375079 counting only the distinct ones).

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

The square root of 1402504140 is about 37450.0218958547. The cubic root of 1402504140 is about 1119.3555337841.

Adding to 1402504140 its reverse (414052041), we get a palindrome (1816556181).

The spelling of 1402504140 in words is "one billion, four hundred two million, five hundred four thousand, one hundred forty".