42124985 has 8 divisors (see below), whose sum is σ = 57771456. Its totient is φ = 28885680.

The previous prime is 42124969. The next prime is 42124987. The reversal of 42124985 is 58942124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42124985 - 2⁴ = 42124969 is a prime.

It is a super-2 number, since 2×42124985² = 3549028722500450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1203571 = 42124985 / (4 + 2 + 1 + 2 + 4 + 9 + 8 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42124987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601751 + ... + 601820.

It is an arithmetic number, because the mean of its divisors is an integer number (7221432).

Almost surely, 2^42124985 is an apocalyptic number.

It is an amenable number.

42124985 is a deficient number, since it is larger than the sum of its proper divisors (15646471).

42124985 is a wasteful number, since it uses less digits than its factorization.

42124985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203583.

The product of its digits is 23040, while the sum is 35.

The square root of 42124985 is about 6490.3763373167. The cubic root of 42124985 is about 347.9471255599.

The spelling of 42124985 in words is "forty-two million, one hundred twenty-four thousand, nine hundred eighty-five".