1277040534 has 48 divisors (see below), whose sum is σ = 3208445184. Its totient is φ = 331697520.

The previous prime is 1277040529. The next prime is 1277040547. The reversal of 1277040534 is 4350407721.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1277040495 and 1277040504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120562 + ... + 130725.

It is an arithmetic number, because the mean of its divisors is an integer number (66842608).

Almost surely, 2^1277040534 is an apocalyptic number.

1277040534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1277040534 is an abundant number, since it is smaller than the sum of its proper divisors (1931404650).

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

1277040534 is a wasteful number, since it uses less digits than its factorization.

1277040534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251321 (or 251310 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 1277040534 is about 35735.7039107949. The cubic root of 1277040534 is about 1084.9296064533.

The spelling of 1277040534 in words is "one billion, two hundred seventy-seven million, forty thousand, five hundred thirty-four".