102420420552124 has 24 divisors (see below), whose sum is σ = 179487544088160. Its totient is φ = 51138314334144.

The previous prime is 102420420552103. The next prime is 102420420552133. The reversal of 102420420552124 is 421255024024201.

It is a super-2 number, since 2×102420420552124² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102420420552124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169777 + ... + 14475799.

It is an arithmetic number, because the mean of its divisors is an integer number (7478647670340).

Almost surely, 2^{102420420552124} is an apocalyptic number.

It is an amenable number.

102420420552124 is a deficient number, since it is larger than the sum of its proper divisors (77067123536036).

102420420552124 is a wasteful number, since it uses less digits than its factorization.

102420420552124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12308949 (or 12308947 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 102420420552124 its reverse (421255024024201), we get a palindrome (523675444576325).

The spelling of 102420420552124 in words is "one hundred two trillion, four hundred twenty billion, four hundred twenty million, five hundred fifty-two thousand, one hundred twenty-four".