102400142 has 12 divisors (see below), whose sum is σ = 166325040. Its totient is φ = 47261448.

The previous prime is 102400121. The next prime is 102400153. The reversal of 102400142 is 241004201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151142 + ... + 151817.

It is an arithmetic number, because the mean of its divisors is an integer number (13860420).

Almost surely, 2^102400142 is an apocalyptic number.

102400142 is a deficient number, since it is larger than the sum of its proper divisors (63924898).

102400142 is a wasteful number, since it uses less digits than its factorization.

102400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302987 (or 302974 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 102400142 is about 10119.2955288399. The cubic root of 102400142 is about 467.8430543694.

Adding to 102400142 its reverse (241004201), we get a palindrome (343404343).

The spelling of 102400142 in words is "one hundred two million, four hundred thousand, one hundred forty-two".