38402042 has 32 divisors (see below), whose sum is σ = 69120000. Its totient is φ = 15645168.

The previous prime is 38402027. The next prime is 38402047. The reversal of 38402042 is 24020483.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 38401999 and 38402017.

It is not an unprimeable number, because it can be changed into a prime (38402047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76709 + ... + 77207.

It is an arithmetic number, because the mean of its divisors is an integer number (2160000).

Almost surely, 2^38402042 is an apocalyptic number.

38402042 is a deficient number, since it is larger than the sum of its proper divisors (30717958).

38402042 is a wasteful number, since it uses less digits than its factorization.

38402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 38402042 is about 6196.9381149080. The cubic root of 38402042 is about 337.3790461866.

The spelling of 38402042 in words is "thirty-eight million, four hundred two thousand, forty-two".