42400402 has 16 divisors (see below), whose sum is σ = 69581952. Its totient is φ = 19217520.

The previous prime is 42400399. The next prime is 42400403. The reversal of 42400402 is 20400424.

42400402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42400403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5623 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (4348872).

Almost surely, 2^42400402 is an apocalyptic number.

42400402 is a deficient number, since it is larger than the sum of its proper divisors (27181550).

42400402 is a wasteful number, since it uses less digits than its factorization.

42400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42400402 is about 6511.5591066963. The cubic root of 42400402 is about 348.7037822816.

Adding to 42400402 its reverse (20400424), we get a palindrome (62800826).

The spelling of 42400402 in words is "forty-two million, four hundred thousand, four hundred two".