1402120040 has 32 divisors (see below), whose sum is σ = 3167068680. Its totient is φ = 558661632.

The previous prime is 1402120037. The next prime is 1402120051. The reversal of 1402120040 is 400212041.

It can be written as a sum of positive squares in 4 ways, for example, as 1394424964 + 7695076 = 37342^2 + 2774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1402119997 and 1402120024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57917 + ... + 78476.

Almost surely, 2^1402120040 is an apocalyptic number.

1402120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402120040 is an abundant number, since it is smaller than the sum of its proper divisors (1764948640).

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

1402120040 is a wasteful number, since it uses less digits than its factorization.

1402120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136661 (or 136657 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1402120040 is about 37444.8933768011. The cubic root of 1402120040 is about 1119.2533395009.

Adding to 1402120040 its reverse (400212041), we get a palindrome (1802332081).

The spelling of 1402120040 in words is "one billion, four hundred two million, one hundred twenty thousand, forty".