40419972 has 30 divisors (see below), whose sum is σ = 105666638. Its totient is φ = 13473216.

The previous prime is 40419941. The next prime is 40419991. The reversal of 40419972 is 27991404.

It can be written as a sum of positive squares in only one way, i.e., 40373316 + 46656 = 6354^2 + 216^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62053 + ... + 62700.

Almost surely, 2^40419972 is an apocalyptic number.

It is an amenable number.

40419972 is an abundant number, since it is smaller than the sum of its proper divisors (65246666).

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

40419972 is a wasteful number, since it uses less digits than its factorization.

40419972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124769 (or 124758 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 40419972 is about 6357.6703280368. The cubic root of 40419972 is about 343.1879280804.

The spelling of 40419972 in words is "forty million, four hundred nineteen thousand, nine hundred seventy-two".