139741442 has 8 divisors (see below), whose sum is σ = 210824316. Its totient is φ = 69466672.

The previous prime is 139741429. The next prime is 139741451. The reversal of 139741442 is 244147931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 136165561 + 3575881 = 11669^2 + 1891^2 .

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

It is a super-2 number, since 2×139741442² = 39055341224478728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201593 + ... + 202284.

Almost surely, 2^139741442 is an apocalyptic number.

139741442 is a deficient number, since it is larger than the sum of its proper divisors (71082874).

139741442 is a wasteful number, since it uses less digits than its factorization.

139741442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404052.

The product of its digits is 24192, while the sum is 35.

The square root of 139741442 is about 11821.2284471623. The cubic root of 139741442 is about 518.9295558426.

The spelling of 139741442 in words is "one hundred thirty-nine million, seven hundred forty-one thousand, four hundred forty-two".