42851559 has 8 divisors (see below), whose sum is σ = 57486592. Its totient is φ = 28392120.

The previous prime is 42851551. The next prime is 42851563. The reversal of 42851559 is 95515824.

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

It is not a de Polignac number, because 42851559 - 2³ = 42851551 is a prime.

It is a super-2 number, since 2×42851559² = 3672512217460962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42851551) 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, 43327 + ... + 44304.

It is an arithmetic number, because the mean of its divisors is an integer number (7185824).

Almost surely, 2^42851559 is an apocalyptic number.

42851559 is a deficient number, since it is larger than the sum of its proper divisors (14635033).

42851559 is a wasteful number, since it uses less digits than its factorization.

42851559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87797.

The product of its digits is 72000, while the sum is 39.

The square root of 42851559 is about 6546.1102190538. The cubic root of 42851559 is about 349.9362033381.

The spelling of 42851559 in words is "forty-two million, eight hundred fifty-one thousand, five hundred fifty-nine".