1275273342 has 64 divisors (see below), whose sum is σ = 3245760000. Its totient is φ = 363579840.

The previous prime is 1275273301. The next prime is 1275273353. The reversal of 1275273342 is 2433725721.

1275273342 is a `hidden beast` number, since 127 + 527 + 3 + 3 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1275273297 and 1275273306.

It is a congruent number.

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, 185242 + ... + 192002.

It is an arithmetic number, because the mean of its divisors is an integer number (50715000).

Almost surely, 2^1275273342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275273342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622880000).

1275273342 is an abundant number, since it is smaller than the sum of its proper divisors (1970486658).

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

1275273342 is a wasteful number, since it uses less digits than its factorization.

1275273342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278 (or 7272 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 1275273342 is about 35710.9694911802. The cubic root of 1275273342 is about 1084.4289269684.

The spelling of 1275273342 in words is "one billion, two hundred seventy-five million, two hundred seventy-three thousand, three hundred forty-two".