1276240542 has 16 divisors (see below), whose sum is σ = 2552948112. Its totient is φ = 425335680.

The previous prime is 1276240529. The next prime is 1276240573. The reversal of 1276240542 is 2450426721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23292 + ... + 55632.

It is an arithmetic number, because the mean of its divisors is an integer number (159559257).

Almost surely, 2^1276240542 is an apocalyptic number.

1276240542 is an abundant number, since it is smaller than the sum of its proper divisors (1276707570).

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

1276240542 is a wasteful number, since it uses less digits than its factorization.

1276240542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38923.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1276240542 is about 35724.5089819300. The cubic root of 1276240542 is about 1084.7030105903.

The spelling of 1276240542 in words is "one billion, two hundred seventy-six million, two hundred forty thousand, five hundred forty-two".