42925117 has 4 divisors (see below), whose sum is σ = 43104960. Its totient is φ = 42745276.

The previous prime is 42925087. The next prime is 42925121. The reversal of 42925117 is 71152924.

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 42925117 - 2¹⁹ = 42400829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42925717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89563 + ... + 90040.

It is an arithmetic number, because the mean of its divisors is an integer number (10776240).

Almost surely, 2^42925117 is an apocalyptic number.

It is an amenable number.

42925117 is a deficient number, since it is larger than the sum of its proper divisors (179843).

42925117 is a wasteful number, since it uses less digits than its factorization.

42925117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179842.

The product of its digits is 5040, while the sum is 31.

The square root of 42925117 is about 6551.7262610704. The cubic root of 42925117 is about 350.1363196878.

It can be divided in two parts, 4292 and 5117, that added together give a square (9409 = 97²).

The spelling of 42925117 in words is "forty-two million, nine hundred twenty-five thousand, one hundred seventeen".