42144420 has 24 divisors (see below), whose sum is σ = 118004544. Its totient is φ = 11238496.

The previous prime is 42144409. The next prime is 42144457. The reversal of 42144420 is 2444124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351144 + ... + 351263.

It is an arithmetic number, because the mean of its divisors is an integer number (4916856).

Almost surely, 2^42144420 is an apocalyptic number.

It is an amenable number.

42144420 is an abundant number, since it is smaller than the sum of its proper divisors (75860124).

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

42144420 is a wasteful number, since it uses less digits than its factorization.

42144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702419 (or 702417 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 42144420 is about 6491.8733813900. The cubic root of 42144420 is about 348.0006275587. Note that the first 3 decimals are identical.

Adding to 42144420 its reverse (2444124), we get a palindrome (44588544).

The spelling of 42144420 in words is "forty-two million, one hundred forty-four thousand, four hundred twenty".