40120632421 has 8 divisors (see below), whose sum is σ = 40806548640. Its totient is φ = 39434913168.

The previous prime is 40120632413. The next prime is 40120632437. The reversal of 40120632421 is 12423602104.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40120632421 - 2³ = 40120632413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120632401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395670 + ... + 486616.

It is an arithmetic number, because the mean of its divisors is an integer number (5100818580).

Almost surely, 2^40120632421 is an apocalyptic number.

It is an amenable number.

40120632421 is a deficient number, since it is larger than the sum of its proper divisors (685916219).

40120632421 is an equidigital number, since it uses as much as digits as its factorization.

40120632421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98483.

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 40120632421 in words is "forty billion, one hundred twenty million, six hundred thirty-two thousand, four hundred twenty-one".