242172415 has 4 divisors (see below), whose sum is σ = 290606904. Its totient is φ = 193737928.

The previous prime is 242172401. The next prime is 242172419. The reversal of 242172415 is 514271242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242172415 - 2⁵ = 242172383 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 (242172419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24217237 + ... + 24217246.

It is an arithmetic number, because the mean of its divisors is an integer number (72651726).

Almost surely, 2^242172415 is an apocalyptic number.

242172415 is a deficient number, since it is larger than the sum of its proper divisors (48434489).

242172415 is an equidigital number, since it uses as much as digits as its factorization.

242172415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48434488.

The product of its digits is 4480, while the sum is 28.

The square root of 242172415 is about 15561.8898273956. The cubic root of 242172415 is about 623.3159271133.

The spelling of 242172415 in words is "two hundred forty-two million, one hundred seventy-two thousand, four hundred fifteen".