1390042935 has 48 divisors (see below), whose sum is σ = 2505859200. Its totient is φ = 711954432.

The previous prime is 1390042931. The next prime is 1390042949. The reversal of 1390042935 is 5392400931.

It is a happy number.

It is not a de Polignac number, because 1390042935 - 2² = 1390042931 is a prime.

It is a super-2 number, since 2×1390042935² = 3864438722286828450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1390042935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390042931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249106 + ... + 254624.

It is an arithmetic number, because the mean of its divisors is an integer number (52205400).

Almost surely, 2^1390042935 is an apocalyptic number.

1390042935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1390042935 is a deficient number, since it is larger than the sum of its proper divisors (1115816265).

1390042935 is a wasteful number, since it uses less digits than its factorization.

1390042935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752 (or 5749 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1390042935 is about 37283.2795633646. The cubic root of 1390042935 is about 1116.0305205165.

The spelling of 1390042935 in words is "one billion, three hundred ninety million, forty-two thousand, nine hundred thirty-five".