157842427 has 8 divisors (see below), whose sum is σ = 161164080. Its totient is φ = 154533600.

The previous prime is 157842413. The next prime is 157842449. The reversal of 157842427 is 724248751.

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

It is a cyclic number.

It is not a de Polignac number, because 157842427 - 2¹¹ = 157840379 is a prime.

It is a super-2 number, since 2×157842427² = 49828463522500658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157842427.

It is not an unprimeable number, because it can be changed into a prime (157845427) 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, 24052 + ... + 29902.

It is an arithmetic number, because the mean of its divisors is an integer number (20145510).

Almost surely, 2^157842427 is an apocalyptic number.

157842427 is a deficient number, since it is larger than the sum of its proper divisors (3321653).

157842427 is an equidigital number, since it uses as much as digits as its factorization.

157842427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413.

The product of its digits is 125440, while the sum is 40.

The square root of 157842427 is about 12563.5356090553. The cubic root of 157842427 is about 540.4322407993.

It can be divided in two parts, 1578 and 42427, that multiplied together give a triangular number (66949806 = T₁₁₅₇₁).

The spelling of 157842427 in words is "one hundred fifty-seven million, eight hundred forty-two thousand, four hundred twenty-seven".