42124130 has 48 divisors (see below), whose sum is σ = 82967976. Its totient is φ = 15344640.

The previous prime is 42124127. The next prime is 42124141. The reversal of 42124130 is 3142124.

It can be written as a sum of positive squares in 12 ways, for example, as 12823561 + 29300569 = 3581^2 + 5413^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 42124099 and 42124108.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232640 + ... + 232820.

Almost surely, 2^42124130 is an apocalyptic number.

42124130 is a deficient number, since it is larger than the sum of its proper divisors (40843846).

42124130 is a wasteful number, since it uses less digits than its factorization.

42124130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42124130 is about 6490.3104702318. The cubic root of 42124130 is about 347.9447714795.

Adding to 42124130 its reverse (3142124), we get a palindrome (45266254).

The spelling of 42124130 in words is "forty-two million, one hundred twenty-four thousand, one hundred thirty".