42121124 has 6 divisors (see below), whose sum is σ = 73711974. Its totient is φ = 21060560.

The previous prime is 42121099. The next prime is 42121147. The reversal of 42121124 is 42112124.

It can be written as a sum of positive squares in only one way, i.e., 42120100 + 1024 = 6490^2 + 32^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265137 + ... + 5265144.

It is an arithmetic number, because the mean of its divisors is an integer number (12285329).

Almost surely, 2^42121124 is an apocalyptic number.

It is an amenable number.

42121124 is a deficient number, since it is larger than the sum of its proper divisors (31590850).

42121124 is a wasteful number, since it uses less digits than its factorization.

42121124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530285 (or 10530283 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 42121124 is about 6490.0788901214. The cubic root of 42121124 is about 347.9364947755.

Adding to 42121124 its reverse (42112124), we get a palindrome (84233248).

The spelling of 42121124 in words is "forty-two million, one hundred twenty-one thousand, one hundred twenty-four".