139742867 has 8 divisors (see below), whose sum is σ = 154284480. Its totient is φ = 125507560.

The previous prime is 139742861. The next prime is 139742879. The reversal of 139742867 is 768247931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139742867 - 2⁶ = 139742803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139742861) 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, 75617 + ... + 77442.

It is an arithmetic number, because the mean of its divisors is an integer number (19285560).

Almost surely, 2^139742867 is an apocalyptic number.

139742867 is a deficient number, since it is larger than the sum of its proper divisors (14541613).

139742867 is a wasteful number, since it uses less digits than its factorization.

139742867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153153.

The product of its digits is 508032, while the sum is 47.

The square root of 139742867 is about 11821.2887199324. The cubic root of 139742867 is about 518.9313197481.

The spelling of 139742867 in words is "one hundred thirty-nine million, seven hundred forty-two thousand, eight hundred sixty-seven".