42251441545154 has 4 divisors (see below), whose sum is σ = 63377162317734. Its totient is φ = 21125720772576.

The previous prime is 42251441545141. The next prime is 42251441545177. The reversal of 42251441545154 is 45154514415224.

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., 35387686050025 + 6863755495129 = 5948755^2 + 2619877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42251441545099 and 42251441545108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562860386287 + ... + 10562860386290.

Almost surely, 2^{42251441545154} is an apocalyptic number.

42251441545154 is a deficient number, since it is larger than the sum of its proper divisors (21125720772580).

42251441545154 is a wasteful number, since it uses less digits than its factorization.

42251441545154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21125720772579.

The product of its digits is 2560000, while the sum is 47.

The spelling of 42251441545154 in words is "forty-two trillion, two hundred fifty-one billion, four hundred forty-one million, five hundred forty-five thousand, one hundred fifty-four".