42972154 has 8 divisors (see below), whose sum is σ = 64509300. Its totient is φ = 21469056.

The previous prime is 42972151. The next prime is 42972161. The reversal of 42972154 is 45127924.

It can be written as a sum of positive squares in 2 ways, for example, as 41925625 + 1046529 = 6475^2 + 1023^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42972151) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5079 + ... + 10570.

Almost surely, 2^42972154 is an apocalyptic number.

42972154 is a deficient number, since it is larger than the sum of its proper divisors (21537146).

42972154 is a wasteful number, since it uses less digits than its factorization.

42972154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17024.

The product of its digits is 20160, while the sum is 34.

The square root of 42972154 is about 6555.3149428536. The cubic root of 42972154 is about 350.2641651950.

It can be divided in two parts, 42 and 972154, that added together give a square (972196 = 986²).

The spelling of 42972154 in words is "forty-two million, nine hundred seventy-two thousand, one hundred fifty-four".