151637242 has 4 divisors (see below), whose sum is σ = 227455866. Its totient is φ = 75818620.

The previous prime is 151637207. The next prime is 151637243. The reversal of 151637242 is 242736151.

151637242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131125401 + 20511841 = 11451^2 + 4529^2 .

It is a super-2 number, since 2×151637242² = 45987706322733128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151637243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37909309 + ... + 37909312.

Almost surely, 2^151637242 is an apocalyptic number.

151637242 is a deficient number, since it is larger than the sum of its proper divisors (75818624).

151637242 is an equidigital number, since it uses as much as digits as its factorization.

151637242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75818623.

The product of its digits is 10080, while the sum is 31.

The square root of 151637242 is about 12314.1074382190. The cubic root of 151637242 is about 533.2554371477.

The spelling of 151637242 in words is "one hundred fifty-one million, six hundred thirty-seven thousand, two hundred forty-two".