139078046 has 4 divisors (see below), whose sum is σ = 208617072. Its totient is φ = 69539022.

The previous prime is 139078031. The next prime is 139078057. The reversal of 139078046 is 640870931.

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

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, 34769510 + ... + 34769513.

It is an arithmetic number, because the mean of its divisors is an integer number (52154268).

Almost surely, 2^139078046 is an apocalyptic number.

139078046 is a deficient number, since it is larger than the sum of its proper divisors (69539026).

139078046 is an equidigital number, since it uses as much as digits as its factorization.

139078046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69539025.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 139078046 is about 11793.1355457317. The cubic root of 139078046 is about 518.1070797251.

The spelling of 139078046 in words is "one hundred thirty-nine million, seventy-eight thousand, forty-six".