72410421 has 8 divisors (see below), whose sum is σ = 96590880. Its totient is φ = 48251792.

The previous prime is 72410413. The next prime is 72410449. The reversal of 72410421 is 12401427.

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 72410421 - 2³ = 72410413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72410411) 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, 5335 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (12073860).

Almost surely, 2^72410421 is an apocalyptic number.

It is an amenable number.

72410421 is a deficient number, since it is larger than the sum of its proper divisors (24180459).

72410421 is a wasteful number, since it uses less digits than its factorization.

72410421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 72410421 is about 8509.4312970962. The cubic root of 72410421 is about 416.8057396735.

Adding to 72410421 its reverse (12401427), we get a palindrome (84811848).

The spelling of 72410421 in words is "seventy-two million, four hundred ten thousand, four hundred twenty-one".