42129713 has 4 divisors (see below), whose sum is σ = 43488768. Its totient is φ = 40770660.

The previous prime is 42129701. The next prime is 42129733. The reversal of 42129713 is 31792124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42129713 - 2⁴ = 42129697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42129733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679481 + ... + 679542.

It is an arithmetic number, because the mean of its divisors is an integer number (10872192).

Almost surely, 2^42129713 is an apocalyptic number.

It is an amenable number.

42129713 is a deficient number, since it is larger than the sum of its proper divisors (1359055).

42129713 is a wasteful number, since it uses less digits than its factorization.

42129713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359054.

The product of its digits is 3024, while the sum is 29.

The square root of 42129713 is about 6490.7405586728. The cubic root of 42129713 is about 347.9601426365.

The spelling of 42129713 in words is "forty-two million, one hundred twenty-nine thousand, seven hundred thirteen".