46642421 has 4 divisors (see below), whose sum is σ = 53305632. Its totient is φ = 39979212.

The previous prime is 46642403. The next prime is 46642439. The reversal of 46642421 is 12424664.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (46642403) and next prime (46642439).

It is a de Polignac number, because none of the positive numbers 2^k-46642421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46642481) 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, 3331595 + ... + 3331608.

It is an arithmetic number, because the mean of its divisors is an integer number (13326408).

Almost surely, 2^46642421 is an apocalyptic number.

It is an amenable number.

46642421 is a deficient number, since it is larger than the sum of its proper divisors (6663211).

46642421 is an equidigital number, since it uses as much as digits as its factorization.

46642421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663210.

The product of its digits is 9216, while the sum is 29.

The square root of 46642421 is about 6829.5256789912. The cubic root of 46642421 is about 359.9650711996.

The spelling of 46642421 in words is "forty-six million, six hundred forty-two thousand, four hundred twenty-one".