40154128 has 30 divisors (see below), whose sum is σ = 90502206. Its totient is φ = 17208576.

The previous prime is 40154123. The next prime is 40154137. The reversal of 40154128 is 82145104.

It can be written as a sum of positive squares in only one way, i.e., 31674384 + 8479744 = 5628^2 + 2912^2 .

It is a super-2 number, since 2×40154128² = 3224707990880768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40154123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24825 + ... + 26392.

Almost surely, 2^40154128 is an apocalyptic number.

It is an amenable number.

40154128 is an abundant number, since it is smaller than the sum of its proper divisors (50348078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40154128 is a wasteful number, since it uses less digits than its factorization.

40154128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51239 (or 51226 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 40154128 is about 6336.7284934736. The cubic root of 40154128 is about 342.4338849774.

The spelling of 40154128 in words is "forty million, one hundred fifty-four thousand, one hundred twenty-eight".