102045400402 has 16 divisors (see below), whose sum is σ = 166994695872. Its totient is φ = 46381130320.

The previous prime is 102045400367. The next prime is 102045400409. The reversal of 102045400402 is 204004540201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (102045400409) 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, 192228 + ... + 490960.

It is an arithmetic number, because the mean of its divisors is an integer number (10437168492).

Almost surely, 2^102045400402 is an apocalyptic number.

102045400402 is a deficient number, since it is larger than the sum of its proper divisors (64949295470).

102045400402 is a wasteful number, since it uses less digits than its factorization.

102045400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314273.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 102045400402 its reverse (204004540201), we get a palindrome (306049940603).

The spelling of 102045400402 in words is "one hundred two billion, forty-five million, four hundred thousand, four hundred two".