42773953 has 4 divisors (see below), whose sum is σ = 42787540. Its totient is φ = 42760368.

The previous prime is 42773933. The next prime is 42773963. The reversal of 42773953 is 35937724.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34668544 + 8105409 = 5888^2 + 2847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42773953 is a prime.

It is a super-2 number, since 2×42773953² = 3659222110492418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42773903) 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, 643 + ... + 9271.

It is an arithmetic number, because the mean of its divisors is an integer number (10696885).

Almost surely, 2^42773953 is an apocalyptic number.

It is an amenable number.

42773953 is a deficient number, since it is larger than the sum of its proper divisors (13587).

42773953 is an equidigital number, since it uses as much as digits as its factorization.

42773953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586.

The product of its digits is 158760, while the sum is 40.

The square root of 42773953 is about 6540.1798904923. The cubic root of 42773953 is about 349.7248258884.

The spelling of 42773953 in words is "forty-two million, seven hundred seventy-three thousand, nine hundred fifty-three".