139767442 has 16 divisors (see below), whose sum is σ = 215115264. Its totient is φ = 68068000.

The previous prime is 139767403. The next prime is 139767449. The reversal of 139767442 is 244767931.

It is not an unprimeable number, because it can be changed into a prime (139767449) 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, 73767 + ... + 75637.

It is an arithmetic number, because the mean of its divisors is an integer number (13444704).

Almost surely, 2^139767442 is an apocalyptic number.

139767442 is a deficient number, since it is larger than the sum of its proper divisors (75347822).

139767442 is a wasteful number, since it uses less digits than its factorization.

139767442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825.

The product of its digits is 254016, while the sum is 43.

The square root of 139767442 is about 11822.3281125166. The cubic root of 139767442 is about 518.9617374955.

The spelling of 139767442 in words is "one hundred thirty-nine million, seven hundred sixty-seven thousand, four hundred forty-two".