139011042 has 32 divisors (see below), whose sum is σ = 283668480. Its totient is φ = 45404240.

The previous prime is 139011029. The next prime is 139011071. The reversal of 139011042 is 240110931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75343 + ... + 77165.

It is an arithmetic number, because the mean of its divisors is an integer number (8864640).

Almost surely, 2^139011042 is an apocalyptic number.

139011042 is an abundant number, since it is smaller than the sum of its proper divisors (144657438).

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

139011042 is a wasteful number, since it uses less digits than its factorization.

139011042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 139011042 is about 11790.2943983600. The cubic root of 139011042 is about 518.0238630848.

Adding to 139011042 its reverse (240110931), we get a palindrome (379121973).

The spelling of 139011042 in words is "one hundred thirty-nine million, eleven thousand, forty-two".