150139975442 has 4 divisors (see below), whose sum is σ = 225209963166. Its totient is φ = 75069987720.

The previous prime is 150139975439. The next prime is 150139975463. The reversal of 150139975442 is 244579931051.

It is a Cunningham number, because it is equal to 387479²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244579931051 = 88721 ⋅2756731.

It can be written as a sum of positive squares in only one way, i.e., 150139975441 + 1 = 387479^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37534993859 + ... + 37534993862.

Almost surely, 2^150139975442 is an apocalyptic number.

150139975442 is a deficient number, since it is larger than the sum of its proper divisors (75069987724).

150139975442 is an equidigital number, since it uses as much as digits as its factorization.

150139975442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75069987723.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 150139975442 in words is "one hundred fifty billion, one hundred thirty-nine million, nine hundred seventy-five thousand, four hundred forty-two".