42621481 has 8 divisors (see below), whose sum is σ = 48832640. Its totient is φ = 36440928.

The previous prime is 42621457. The next prime is 42621529. The reversal of 42621481 is 18412624.

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 42621481 - 2¹¹ = 42619433 is a prime.

It is a super-2 number, since 2×42621481² = 3633181285266722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42621451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4581 + ... + 10306.

It is an arithmetic number, because the mean of its divisors is an integer number (6104080).

Almost surely, 2^42621481 is an apocalyptic number.

It is an amenable number.

42621481 is a deficient number, since it is larger than the sum of its proper divisors (6211159).

42621481 is a wasteful number, since it uses less digits than its factorization.

42621481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303.

The product of its digits is 3072, while the sum is 28.

The square root of 42621481 is about 6528.5129240892. The cubic root of 42621481 is about 349.3087882118.

The spelling of 42621481 in words is "forty-two million, six hundred twenty-one thousand, four hundred eighty-one".