42424051 has 4 divisors (see below), whose sum is σ = 42729400. Its totient is φ = 42118704.

The previous prime is 42424043. The next prime is 42424087. The reversal of 42424051 is 15042424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42424051 - 2³ = 42424043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42424001) 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, 152466 + ... + 152743.

It is an arithmetic number, because the mean of its divisors is an integer number (10682350).

Almost surely, 2^42424051 is an apocalyptic number.

42424051 is a deficient number, since it is larger than the sum of its proper divisors (305349).

42424051 is a wasteful number, since it uses less digits than its factorization.

42424051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305348.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42424051 is about 6513.3747781008. The cubic root of 42424051 is about 348.7686005589.

Adding to 42424051 its reverse (15042424), we get a palindrome (57466475).

The spelling of 42424051 in words is "forty-two million, four hundred twenty-four thousand, fifty-one".