42760621 has 4 divisors (see below), whose sum is σ = 45011200. Its totient is φ = 40510044.

The previous prime is 42760589. The next prime is 42760639. The reversal of 42760621 is 12606724.

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 a cyclic number.

It is not a de Polignac number, because 42760621 - 2⁵ = 42760589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42760621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42760651) 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, 1125261 + ... + 1125298.

It is an arithmetic number, because the mean of its divisors is an integer number (11252800).

Almost surely, 2^42760621 is an apocalyptic number.

It is an amenable number.

42760621 is a deficient number, since it is larger than the sum of its proper divisors (2250579).

42760621 is a wasteful number, since it uses less digits than its factorization.

42760621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250578.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 42760621 is about 6539.1605730399. The cubic root of 42760621 is about 349.6884874508.

The spelling of 42760621 in words is "forty-two million, seven hundred sixty thousand, six hundred twenty-one".