902720403942 has 16 divisors (see below), whose sum is σ = 2063360923392. Its totient is φ = 257920115400.

The previous prime is 902720403929. The next prime is 902720403947. The reversal of 902720403942 is 249304027209.

902720403942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 21493342951 = 902720403942 / (9 + 0 + 2 + 7 + 2 + 0 + 4 + 0 + 3 + 9 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 902720403894 and 902720403903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902720403947) 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, 10746671434 + ... + 10746671517.

It is an arithmetic number, because the mean of its divisors is an integer number (128960057712).

Almost surely, 2^902720403942 is an apocalyptic number.

902720403942 is an abundant number, since it is smaller than the sum of its proper divisors (1160640519450).

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

902720403942 is a wasteful number, since it uses less digits than its factorization.

902720403942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21493342963.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 902720403942 in words is "nine hundred two billion, seven hundred twenty million, four hundred three thousand, nine hundred forty-two".