102420311442 has 16 divisors (see below), whose sum is σ = 204896164512. Its totient is φ = 34130846880.

The previous prime is 102420311431. The next prime is 102420311443. The reversal of 102420311442 is 244113024201.

It is a super-3 number, since 3×102420311442³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (102420311443) 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, 2290243 + ... + 2334534.

It is an arithmetic number, because the mean of its divisors is an integer number (12806010282).

Almost surely, 2^102420311442 is an apocalyptic number.

102420311442 is an abundant number, since it is smaller than the sum of its proper divisors (102475853070).

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

102420311442 is a wasteful number, since it uses less digits than its factorization.

102420311442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628473.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 102420311442 its reverse (244113024201), we get a palindrome (346533335643).

The spelling of 102420311442 in words is "one hundred two billion, four hundred twenty million, three hundred eleven thousand, four hundred forty-two".