1273979070 has 256 divisors, whose sum is σ = 4402944000. Its totient is φ = 254555136.

The previous prime is 1273979053. The next prime is 1273979081. The reversal of 1273979070 is 709793721.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 465466 + ... + 468194.

It is an arithmetic number, because the mean of its divisors is an integer number (17199000).

Almost surely, 2^1273979070 is an apocalyptic number.

1273979070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273979070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201472000).

1273979070 is an abundant number, since it is smaller than the sum of its proper divisors (3128964930).

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

1273979070 is a wasteful number, since it uses less digits than its factorization.

1273979070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 1273979070 is about 35692.8434003233. The cubic root of 1273979070 is about 1084.0619413097.

It can be divided in two parts, 12739 and 79070, that added together give a square (91809 = 303²).

The spelling of 1273979070 in words is "one billion, two hundred seventy-three million, nine hundred seventy-nine thousand, seventy".