1277140506 has 16 divisors (see below), whose sum is σ = 2613683424. Its totient is φ = 415813104.

The previous prime is 1277140451. The next prime is 1277140519. The reversal of 1277140506 is 6050417721.

1277140506 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 2474821 + ... + 2475336.

It is an arithmetic number, because the mean of its divisors is an integer number (163355214).

Almost surely, 2^1277140506 is an apocalyptic number.

1277140506 is an abundant number, since it is smaller than the sum of its proper divisors (1336542918).

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

1277140506 is a wasteful number, since it uses less digits than its factorization.

1277140506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950205.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1277140506 is about 35737.1026525654. The cubic root of 1277140506 is about 1084.9579166360.

The spelling of 1277140506 in words is "one billion, two hundred seventy-seven million, one hundred forty thousand, five hundred six".