139731062 has 16 divisors (see below), whose sum is σ = 211522752. Its totient is φ = 69226560.

The previous prime is 139731061. The next prime is 139731083. The reversal of 139731062 is 260137931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139731061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148658 + ... + 149594.

It is an arithmetic number, because the mean of its divisors is an integer number (13220172).

Almost surely, 2^139731062 is an apocalyptic number.

139731062 is a deficient number, since it is larger than the sum of its proper divisors (71791690).

139731062 is a wasteful number, since it uses less digits than its factorization.

139731062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 139731062 is about 11820.7893983439. The cubic root of 139731062 is about 518.9167068216.

Adding to 139731062 its reverse (260137931), we get a palindrome (399868993).

The spelling of 139731062 in words is "one hundred thirty-nine million, seven hundred thirty-one thousand, sixty-two".