40021502 has 8 divisors (see below), whose sum is σ = 63563616. Its totient is φ = 18833632.

The previous prime is 40021489. The next prime is 40021507. The reversal of 40021502 is 20512004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588518 + ... + 588585.

It is an arithmetic number, because the mean of its divisors is an integer number (7945452).

Almost surely, 2^40021502 is an apocalyptic number.

40021502 is a deficient number, since it is larger than the sum of its proper divisors (23542114).

40021502 is a wasteful number, since it uses less digits than its factorization.

40021502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177122.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40021502 is about 6326.2549743114. The cubic root of 40021502 is about 342.0564581963.

Adding to 40021502 its reverse (20512004), we get a palindrome (60533506).

The spelling of 40021502 in words is "forty million, twenty-one thousand, five hundred two".