1255433042 has 4 divisors (see below), whose sum is σ = 1883149566. Its totient is φ = 627716520.

The previous prime is 1255433041. The next prime is 1255433057. The reversal of 1255433042 is 2403345521.

It is a happy number.

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., 898260841 + 357172201 = 29971^2 + 18899^2 .

It is a super-2 number, since 2×1255433042² = 3152224245890747528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255432996 and 1255433014.

It is not an unprimeable number, because it can be changed into a prime (1255433041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313858259 + ... + 313858262.

Almost surely, 2^1255433042 is an apocalyptic number.

1255433042 is a deficient number, since it is larger than the sum of its proper divisors (627716524).

1255433042 is an equidigital number, since it uses as much as digits as its factorization.

1255433042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627716523.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1255433042 is about 35432.0905677325. The cubic root of 1255433042 is about 1078.7757738771.

Adding to 1255433042 its reverse (2403345521), we get a palindrome (3658778563).

The spelling of 1255433042 in words is "one billion, two hundred fifty-five million, four hundred thirty-three thousand, forty-two".