42772493 has 8 divisors (see below), whose sum is σ = 45437112. Its totient is φ = 40124416.

The previous prime is 42772489. The next prime is 42772507. The reversal of 42772493 is 39427724.

It can be written as a sum of positive squares in 4 ways, for example, as 14235529 + 28536964 = 3773^2 + 5342^2 .

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 42772493 - 2² = 42772489 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 (42772423) 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, 1421 + ... + 9357.

It is an arithmetic number, because the mean of its divisors is an integer number (5679639).

Almost surely, 2^42772493 is an apocalyptic number.

It is an amenable number.

42772493 is a deficient number, since it is larger than the sum of its proper divisors (2664619).

42772493 is a wasteful number, since it uses less digits than its factorization.

42772493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271.

The product of its digits is 84672, while the sum is 38.

The square root of 42772493 is about 6540.0682718149. The cubic root of 42772493 is about 349.7208467998.

The spelling of 42772493 in words is "forty-two million, seven hundred seventy-two thousand, four hundred ninety-three".