253420234 has 4 divisors (see below), whose sum is σ = 380130354. Its totient is φ = 126710116.

The previous prime is 253420231. The next prime is 253420249. The reversal of 253420234 is 432024352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 247968009 + 5452225 = 15747^2 + 2335^2 .

It is a super-2 number, since 2×253420234² = 128443630001229512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253420199 and 253420208.

It is not an unprimeable number, because it can be changed into a prime (253420231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63355057 + ... + 63355060.

Almost surely, 2^253420234 is an apocalyptic number.

253420234 is a deficient number, since it is larger than the sum of its proper divisors (126710120).

253420234 is a wasteful number, since it uses less digits than its factorization.

253420234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126710119.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 253420234 is about 15919.1781823058. The cubic root of 253420234 is about 632.8203392239.

Adding to 253420234 its reverse (432024352), we get a palindrome (685444586).

The spelling of 253420234 in words is "two hundred fifty-three million, four hundred twenty thousand, two hundred thirty-four".