1276776042 has 32 divisors (see below), whose sum is σ = 2621678400. Its totient is φ = 414360960.

The previous prime is 1276776037. The next prime is 1276776043. The reversal of 1276776042 is 2406776721.

It is a super-2 number, since 2×1276776042² = 3260314122850371528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1276775985 and 1276776003.

It is not an unprimeable number, because it can be changed into a prime (1276776043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26334 + ... + 56982.

It is an arithmetic number, because the mean of its divisors is an integer number (81927450).

Almost surely, 2^1276776042 is an apocalyptic number.

1276776042 is an abundant number, since it is smaller than the sum of its proper divisors (1344902358).

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

1276776042 is a wasteful number, since it uses less digits than its factorization.

1276776042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30838.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 1276776042 is about 35732.0030504868. The cubic root of 1276776042 is about 1084.8547001871.

The spelling of 1276776042 in words is "one billion, two hundred seventy-six million, seven hundred seventy-six thousand, forty-two".