42920441 has 4 divisors (see below), whose sum is σ = 43160400. Its totient is φ = 42680484.

The previous prime is 42920431. The next prime is 42920443. The reversal of 42920441 is 14402924.

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 a de Polignac number, because none of the positive numbers 2^k-42920441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42920441.

It is not an unprimeable number, because it can be changed into a prime (42920443) 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, 119711 + ... + 120068.

It is an arithmetic number, because the mean of its divisors is an integer number (10790100).

Almost surely, 2^42920441 is an apocalyptic number.

It is an amenable number.

42920441 is a deficient number, since it is larger than the sum of its proper divisors (239959).

42920441 is a wasteful number, since it uses less digits than its factorization.

42920441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239958.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 42920441 is about 6551.3693988356. The cubic root of 42920441 is about 350.1236053222.

The spelling of 42920441 in words is "forty-two million, nine hundred twenty thousand, four hundred forty-one".