42051424 has 24 divisors (see below), whose sum is σ = 84195720. Its totient is φ = 20668416.

The previous prime is 42051403. The next prime is 42051461. The reversal of 42051424 is 42415024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42051395 and 42051404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9249 + ... + 13024.

It is an arithmetic number, because the mean of its divisors is an integer number (3508155).

Almost surely, 2^42051424 is an apocalyptic number.

It is an amenable number.

42051424 is an abundant number, since it is smaller than the sum of its proper divisors (42144296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42051424 is a wasteful number, since it uses less digits than its factorization.

42051424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22342 (or 22334 counting only the distinct ones).

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

The square root of 42051424 is about 6484.7069324681. The cubic root of 42051424 is about 347.7444726558.

Adding to 42051424 its reverse (42415024), we get a palindrome (84466448).

The spelling of 42051424 in words is "forty-two million, fifty-one thousand, four hundred twenty-four".