872442154 has 4 divisors (see below), whose sum is σ = 1308663234. Its totient is φ = 436221076.

The previous prime is 872442149. The next prime is 872442161. The reversal of 872442154 is 451244278.

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., 839666529 + 32775625 = 28977^2 + 5725^2 .

It is a super-2 number, since 2×872442154² = 1522310624152319432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218110537 + ... + 218110540.

Almost surely, 2^872442154 is an apocalyptic number.

872442154 is a deficient number, since it is larger than the sum of its proper divisors (436221080).

872442154 is a wasteful number, since it uses less digits than its factorization.

872442154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436221079.

The product of its digits is 71680, while the sum is 37.

The square root of 872442154 is about 29537.1317835703. The cubic root of 872442154 is about 955.5326849212.

It can be divided in two parts, 87244 and 2154, that added together give a palindrome (89398).

The spelling of 872442154 in words is "eight hundred seventy-two million, four hundred forty-two thousand, one hundred fifty-four".