42253031 has 8 divisors (see below), whose sum is σ = 44440704. Its totient is φ = 40116960.

The previous prime is 42253021. The next prime is 42253033. The reversal of 42253031 is 13035224.

It is a happy number.

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 42253031 - 2⁶ = 42252967 is a prime.

It is a super-2 number, since 2×42253031² = 3570637257373922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42252994 and 42253012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42253033) 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, 11216 + ... + 14501.

It is an arithmetic number, because the mean of its divisors is an integer number (5555088).

Almost surely, 2^42253031 is an apocalyptic number.

42253031 is a deficient number, since it is larger than the sum of its proper divisors (2187673).

42253031 is a wasteful number, since it uses less digits than its factorization.

42253031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25801.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42253031 is about 6500.2331496647. The cubic root of 42253031 is about 348.2993169523.

Adding to 42253031 its reverse (13035224), we get a palindrome (55288255).

The spelling of 42253031 in words is "forty-two million, two hundred fifty-three thousand, thirty-one".