139247302 has 8 divisors (see below), whose sum is σ = 209615112. Its totient is φ = 69375600.

The previous prime is 139247279. The next prime is 139247309. The reversal of 139247302 is 203742931.

139247302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139247302² = 38779622228558408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139247309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123324 + ... + 124447.

It is an arithmetic number, because the mean of its divisors is an integer number (26201889).

Almost surely, 2^139247302 is an apocalyptic number.

139247302 is a deficient number, since it is larger than the sum of its proper divisors (70367810).

139247302 is a wasteful number, since it uses less digits than its factorization.

139247302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248054.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 139247302 is about 11800.3094027233. The cubic root of 139247302 is about 518.3171708331.

The spelling of 139247302 in words is "one hundred thirty-nine million, two hundred forty-seven thousand, three hundred two".