1253442155 has 32 divisors (see below), whose sum is σ = 1842269184. Its totient is φ = 799894656.

The previous prime is 1253442149. The next prime is 1253442161. The reversal of 1253442155 is 5512443521.

It is an interprime number because it is at equal distance from previous prime (1253442149) and next prime (1253442161).

It is a cyclic number.

It is not a de Polignac number, because 1253442155 - 2⁴ = 1253442139 is a prime.

It is a super-2 number, since 2×1253442155² = 3142234471862088050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8744 + ... + 50826.

It is an arithmetic number, because the mean of its divisors is an integer number (57570912).

Almost surely, 2^1253442155 is an apocalyptic number.

1253442155 is a deficient number, since it is larger than the sum of its proper divisors (588827029).

1253442155 is a wasteful number, since it uses less digits than its factorization.

1253442155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42155.

The product of its digits is 24000, while the sum is 32.

The square root of 1253442155 is about 35403.9850158143. The cubic root of 1253442155 is about 1078.2052252057.

Adding to 1253442155 its reverse (5512443521), we get a palindrome (6765885676).

The spelling of 1253442155 in words is "one billion, two hundred fifty-three million, four hundred forty-two thousand, one hundred fifty-five".