102420200142 has 64 divisors (see below), whose sum is σ = 251086489920. Its totient is φ = 30745267200.

The previous prime is 102420200081. The next prime is 102420200153. The reversal of 102420200142 is 241002024201.

102420200142 is a `hidden beast` number, since 1 + 0 + 2 + 420 + 200 + 1 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1750459 + ... + 1808022.

It is an arithmetic number, because the mean of its divisors is an integer number (3923226405).

Almost surely, 2^102420200142 is an apocalyptic number.

102420200142 is an abundant number, since it is smaller than the sum of its proper divisors (148666289778).

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

102420200142 is a wasteful number, since it uses less digits than its factorization.

102420200142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558546 (or 3558540 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102420200142 its reverse (241002024201), we get a palindrome (343422224343).

The spelling of 102420200142 in words is "one hundred two billion, four hundred twenty million, two hundred thousand, one hundred forty-two".