42124440 has 32 divisors (see below), whose sum is σ = 126373680. Its totient is φ = 11233152.

The previous prime is 42124403. The next prime is 42124451. The reversal of 42124440 is 4442124.

It is a congruent number.

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, 175399 + ... + 175638.

Almost surely, 2^42124440 is an apocalyptic number.

42124440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42124440 is an abundant number, since it is smaller than the sum of its proper divisors (84249240).

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

42124440 is a wasteful number, since it uses less digits than its factorization.

42124440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351051 (or 351047 counting only the distinct ones).

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

The square root of 42124440 is about 6490.3343519421. The cubic root of 42124440 is about 347.9456250094.

Adding to 42124440 its reverse (4442124), we get a palindrome (46566564).

The spelling of 42124440 in words is "forty-two million, one hundred twenty-four thousand, four hundred forty".