1253542230 has 48 divisors (see below), whose sum is σ = 3379927824. Its totient is φ = 334277280.

The previous prime is 1253542229. The next prime is 1253542231. The reversal of 1253542230 is 322453521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1253542229) and next prime (1253542231).

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

It is a junction number, because it is equal to n+sod(n) for n = 1253542194 and 1253542203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253542231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255501 + ... + 260360.

It is an arithmetic number, because the mean of its divisors is an integer number (70415163).

Almost surely, 2^1253542230 is an apocalyptic number.

1253542230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253542230 is an abundant number, since it is smaller than the sum of its proper divisors (2126385594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253542230 is an equidigital number, since it uses as much as digits as its factorization.

1253542230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515883 (or 515871 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1253542230 is about 35405.3983172058. The cubic root of 1253542230 is about 1078.2339191282.

Adding to 1253542230 its reverse (322453521), we get a palindrome (1575995751).

The spelling of 1253542230 in words is "one billion, two hundred fifty-three million, five hundred forty-two thousand, two hundred thirty".