1255136146 has 48 divisors (see below), whose sum is σ = 2228718240. Its totient is φ = 527753600.

The previous prime is 1255136137. The next prime is 1255136147. The reversal of 1255136146 is 6416315521.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1255136147) 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, 240141 + ... + 245311.

It is an arithmetic number, because the mean of its divisors is an integer number (46431630).

Almost surely, 2^1255136146 is an apocalyptic number.

1255136146 is a deficient number, since it is larger than the sum of its proper divisors (973582094).

1255136146 is a wasteful number, since it uses less digits than its factorization.

1255136146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271 (or 5260 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 1255136146 is about 35427.9006716458. The cubic root of 1255136146 is about 1078.6907276679.

The spelling of 1255136146 in words is "one billion, two hundred fifty-five million, one hundred thirty-six thousand, one hundred forty-six".