139860142 has 4 divisors (see below), whose sum is σ = 209790216. Its totient is φ = 69930070.

The previous prime is 139860103. The next prime is 139860167. The reversal of 139860142 is 241068931.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 139860098 and 139860107.

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, 34965034 + ... + 34965037.

It is an arithmetic number, because the mean of its divisors is an integer number (52447554).

Almost surely, 2^139860142 is an apocalyptic number.

139860142 is a deficient number, since it is larger than the sum of its proper divisors (69930074).

139860142 is an equidigital number, since it uses as much as digits as its factorization.

139860142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69930073.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 139860142 is about 11826.2480102524. The cubic root of 139860142 is about 519.0764449948.

The spelling of 139860142 in words is "one hundred thirty-nine million, eight hundred sixty thousand, one hundred forty-two".