42777493 has 24 divisors (see below), whose sum is σ = 51710400. Its totient is φ = 35196480.

The previous prime is 42777487. The next prime is 42777499. The reversal of 42777493 is 39477724.

It is an interprime number because it is at equal distance from previous prime (42777487) and next prime (42777499).

It is not a de Polignac number, because 42777493 - 2⁵ = 42777461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42777499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52473 + ... + 53281.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^42777493 is an apocalyptic number.

It is an amenable number.

42777493 is a deficient number, since it is larger than the sum of its proper divisors (8932907).

42777493 is a wasteful number, since it uses less digits than its factorization.

42777493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 862 counting only the distinct ones).

The product of its digits is 296352, while the sum is 43.

The square root of 42777493 is about 6540.4505196508. The cubic root of 42777493 is about 349.7344734399.

The spelling of 42777493 in words is "forty-two million, seven hundred seventy-seven thousand, four hundred ninety-three".