32400142 has 4 divisors (see below), whose sum is σ = 48600216. Its totient is φ = 16200070.

The previous prime is 32400139. The next prime is 32400157. The reversal of 32400142 is 24100423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24100423 = 31 ⋅777433.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8100034 + ... + 8100037.

It is an arithmetic number, because the mean of its divisors is an integer number (12150054).

Almost surely, 2^32400142 is an apocalyptic number.

32400142 is a deficient number, since it is larger than the sum of its proper divisors (16200074).

32400142 is a wasteful number, since it uses less digits than its factorization.

32400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200073.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 32400142 is about 5692.1122617180. The cubic root of 32400142 is about 318.7980364872.

Adding to 32400142 its reverse (24100423), we get a palindrome (56500565).

The spelling of 32400142 in words is "thirty-two million, four hundred thousand, one hundred forty-two".