102240162421 has 16 divisors (see below), whose sum is σ = 106164626176. Its totient is φ = 98378343936.

The previous prime is 102240162403. The next prime is 102240162449. The reversal of 102240162421 is 124261042201.

It is a cyclic number.

It is not a de Polignac number, because 102240162421 - 2¹³ = 102240154229 is a prime.

It is a super-3 number, since 3×102240162421³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102240162491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5183440 + ... + 5203126.

It is an arithmetic number, because the mean of its divisors is an integer number (6635289136).

Almost surely, 2^102240162421 is an apocalyptic number.

It is an amenable number.

102240162421 is a deficient number, since it is larger than the sum of its proper divisors (3924463755).

102240162421 is a wasteful number, since it uses less digits than its factorization.

102240162421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21268.

The product of its (nonzero) digits is 1536, while the sum is 25.

The spelling of 102240162421 in words is "one hundred two billion, two hundred forty million, one hundred sixty-two thousand, four hundred twenty-one".