40521492 has 96 divisors (see below), whose sum is σ = 119669760. Its totient is φ = 11737440.

The previous prime is 40521487. The next prime is 40521511. The reversal of 40521492 is 29412504.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26583 + ... + 28065.

It is an arithmetic number, because the mean of its divisors is an integer number (1246560).

Almost surely, 2^40521492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40521492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59834880).

40521492 is an abundant number, since it is smaller than the sum of its proper divisors (79148268).

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

40521492 is a wasteful number, since it uses less digits than its factorization.

40521492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40521492 is about 6365.6493777147. The cubic root of 40521492 is about 343.4750081930.

Adding to 40521492 its reverse (29412504), we get a palindrome (69933996).

The spelling of 40521492 in words is "forty million, five hundred twenty-one thousand, four hundred ninety-two".