139648542 has 32 divisors (see below), whose sum is σ = 312125184. Its totient is φ = 41284800.

The previous prime is 139648519. The next prime is 139648547. The reversal of 139648542 is 245846931.

139648542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 139648494 and 139648503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139648547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23098 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (9753912).

Almost surely, 2^139648542 is an apocalyptic number.

139648542 is an abundant number, since it is smaller than the sum of its proper divisors (172476642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139648542 is a wasteful number, since it uses less digits than its factorization.

139648542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51664.

The product of its digits is 207360, while the sum is 42.

The square root of 139648542 is about 11817.2984222283. The cubic root of 139648542 is about 518.8145356977.

The spelling of 139648542 in words is "one hundred thirty-nine million, six hundred forty-eight thousand, five hundred forty-two".