42623253 has 10 divisors (see below), whose sum is σ = 63671894. Its totient is φ = 28415448.

The previous prime is 42623249. The next prime is 42623279. The reversal of 42623253 is 35232624.

42623253 is a `hidden beast` number, since 426 + 232 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27436644 + 15186609 = 5238^2 + 3897^2 .

It is not a de Polignac number, because 42623253 - 2² = 42623249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42623153) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 263026 + ... + 263187.

Almost surely, 2^42623253 is an apocalyptic number.

It is an amenable number.

42623253 is a deficient number, since it is larger than the sum of its proper divisors (21048641).

42623253 is an equidigital number, since it uses as much as digits as its factorization.

42623253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526225 (or 526216 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 42623253 is about 6528.6486350546. The cubic root of 42623253 is about 349.3136290149.

Adding to 42623253 its reverse (35232624), we get a palindrome (77855877).

The spelling of 42623253 in words is "forty-two million, six hundred twenty-three thousand, two hundred fifty-three".