1255333842 has 192 divisors, whose sum is σ = 3373050240. Its totient is φ = 344881152.

The previous prime is 1255333829. The next prime is 1255333847. The reversal of 1255333842 is 2483335521.

It is a junction number, because it is equal to n+sod(n) for n = 1255333797 and 1255333806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255333847) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12941538 + ... + 12941634.

It is an arithmetic number, because the mean of its divisors is an integer number (17567970).

Almost surely, 2^1255333842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255333842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686525120).

1255333842 is an abundant number, since it is smaller than the sum of its proper divisors (2117716398).

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

1255333842 is a wasteful number, since it uses less digits than its factorization.

1255333842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 249 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1255333842 is about 35430.6906791273. The cubic root of 1255333842 is about 1078.7473594119.

The spelling of 1255333842 in words is "one billion, two hundred fifty-five million, three hundred thirty-three thousand, eight hundred forty-two".