42351557 has 8 divisors (see below), whose sum is σ = 43176480. Its totient is φ = 41530320.

The previous prime is 42351553. The next prime is 42351577. The reversal of 42351557 is 75515324.

42351557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42351557 - 2² = 42351553 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 (42351553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35582 + ... + 36752.

It is an arithmetic number, because the mean of its divisors is an integer number (5397060).

Almost surely, 2^42351557 is an apocalyptic number.

It is an amenable number.

42351557 is a deficient number, since it is larger than the sum of its proper divisors (824923).

42351557 is a wasteful number, since it uses less digits than its factorization.

42351557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843.

The product of its digits is 21000, while the sum is 32.

The square root of 42351557 is about 6507.8073880532. The cubic root of 42351557 is about 348.5698292996.

The spelling of 42351557 in words is "forty-two million, three hundred fifty-one thousand, five hundred fifty-seven".