73402020402 has 32 divisors (see below), whose sum is σ = 155461488192. Its totient is φ = 23024838144.

The previous prime is 73402020401. The next prime is 73402020457. The reversal of 73402020402 is 20402020437.

It is not an unprimeable number, because it can be changed into a prime (73402020401) 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, 735753 + ... + 829539.

It is an arithmetic number, because the mean of its divisors is an integer number (4858171506).

Almost surely, 2^73402020402 is an apocalyptic number.

73402020402 is an abundant number, since it is smaller than the sum of its proper divisors (82059467790).

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

73402020402 is a wasteful number, since it uses less digits than its factorization.

73402020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101482.

The product of its (nonzero) digits is 2688, while the sum is 24.

Adding to 73402020402 its reverse (20402020437), we get a palindrome (93804040839).

The spelling of 73402020402 in words is "seventy-three billion, four hundred two million, twenty thousand, four hundred two".