155112442 has 8 divisors (see below), whose sum is σ = 233463636. Its totient is φ = 77291232.

The previous prime is 155112431. The next prime is 155112457. The reversal of 155112442 is 244211551.

It can be written as a sum of positive squares in 2 ways, for example, as 154032921 + 1079521 = 12411^2 + 1039^2 .

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

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, 131763 + ... + 132934.

Almost surely, 2^155112442 is an apocalyptic number.

155112442 is a deficient number, since it is larger than the sum of its proper divisors (78351194).

155112442 is a wasteful number, since it uses less digits than its factorization.

155112442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264992.

The product of its digits is 1600, while the sum is 25.

The square root of 155112442 is about 12454.4145587017. The cubic root of 155112442 is about 537.2983972255.

Adding to 155112442 its reverse (244211551), we get a palindrome (399323993).

The spelling of 155112442 in words is "one hundred fifty-five million, one hundred twelve thousand, four hundred forty-two".