442157469 has 8 divisors (see below), whose sum is σ = 634892832. Its totient is φ = 272096880.

The previous prime is 442157467. The next prime is 442157477. The reversal of 442157469 is 964751244.

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

It is not a de Polignac number, because 442157469 - 2¹ = 442157467 is a prime.

It is a super-2 number, since 2×442157469² = 391006454784971922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 442157469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442157467) 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, 5668647 + ... + 5668724.

It is an arithmetic number, because the mean of its divisors is an integer number (79361604).

Almost surely, 2^442157469 is an apocalyptic number.

It is an amenable number.

442157469 is a deficient number, since it is larger than the sum of its proper divisors (192735363).

442157469 is a wasteful number, since it uses less digits than its factorization.

442157469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11337387.

The product of its digits is 241920, while the sum is 42.

The square root of 442157469 is about 21027.5407263902. The cubic root of 442157469 is about 761.8316100656.

The spelling of 442157469 in words is "four hundred forty-two million, one hundred fifty-seven thousand, four hundred sixty-nine".