40121592 has 96 divisors (see below), whose sum is σ = 118126800. Its totient is φ = 11321856.

The previous prime is 40121573. The next prime is 40121617. The reversal of 40121592 is 29512104.

It is a super-2 number, since 2×40121592² = 3219484289228928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128028 + ... + 128340.

Almost surely, 2^40121592 is an apocalyptic number.

40121592 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40121592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59063400).

40121592 is an abundant number, since it is smaller than the sum of its proper divisors (78005208).

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

40121592 is a wasteful number, since it uses less digits than its factorization.

40121592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 40121592 is about 6334.1607178852. The cubic root of 40121592 is about 342.3413711230.

Adding to 40121592 its reverse (29512104), we get a palindrome (69633696).

The spelling of 40121592 in words is "forty million, one hundred twenty-one thousand, five hundred ninety-two".