42497477 has 4 divisors (see below), whose sum is σ = 46360896. Its totient is φ = 38634060.

The previous prime is 42497473. The next prime is 42497479. The reversal of 42497477 is 77479424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42497477 - 2² = 42497473 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 (42497473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931693 + ... + 1931714.

It is an arithmetic number, because the mean of its divisors is an integer number (11590224).

Almost surely, 2^42497477 is an apocalyptic number.

It is an amenable number.

42497477 is a deficient number, since it is larger than the sum of its proper divisors (3863419).

42497477 is a wasteful number, since it uses less digits than its factorization.

42497477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863418.

The product of its digits is 395136, while the sum is 44.

The square root of 42497477 is about 6519.0088970640. The cubic root of 42497477 is about 348.9696965777.

The spelling of 42497477 in words is "forty-two million, four hundred ninety-seven thousand, four hundred seventy-seven".