139735542 has 16 divisors (see below), whose sum is σ = 279652032. Its totient is φ = 46548360.

The previous prime is 139735523. The next prime is 139735549. The reversal of 139735542 is 245537931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 139735542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139735549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3817 + ... + 17147.

It is an arithmetic number, because the mean of its divisors is an integer number (17478252).

Almost surely, 2^139735542 is an apocalyptic number.

139735542 is an abundant number, since it is smaller than the sum of its proper divisors (139916490).

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

139735542 is a wasteful number, since it uses less digits than its factorization.

139735542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15083.

The product of its digits is 113400, while the sum is 39.

The square root of 139735542 is about 11820.9788934758. The cubic root of 139735542 is about 518.9222525272.

The spelling of 139735542 in words is "one hundred thirty-nine million, seven hundred thirty-five thousand, five hundred forty-two".