42491877 has 8 divisors (see below), whose sum is σ = 56704416. Its totient is φ = 28303632.

The previous prime is 42491861. The next prime is 42491881. The reversal of 42491877 is 77819424.

It is a happy number.

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

It is not a de Polignac number, because 42491877 - 2⁴ = 42491861 is a prime.

It is a super-2 number, since 2×42491877² = 3611119221966258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42491837) 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, 1498 + ... + 9339.

It is an arithmetic number, because the mean of its divisors is an integer number (7088052).

Almost surely, 2^42491877 is an apocalyptic number.

It is an amenable number.

42491877 is a deficient number, since it is larger than the sum of its proper divisors (14212539).

42491877 is a wasteful number, since it uses less digits than its factorization.

42491877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147.

The product of its digits is 112896, while the sum is 42.

The square root of 42491877 is about 6518.5793697707. The cubic root of 42491877 is about 348.9543676979.

The spelling of 42491877 in words is "forty-two million, four hundred ninety-one thousand, eight hundred seventy-seven".