1270423720 has 16 divisors (see below), whose sum is σ = 2858453460. Its totient is φ = 508169472.

The previous prime is 1270423717. The next prime is 1270423723. The reversal of 1270423720 is 273240721.

It is an interprime number because it is at equal distance from previous prime (1270423717) and next prime (1270423723).

It can be written as a sum of positive squares in 2 ways, for example, as 1091773764 + 178649956 = 33042^2 + 13366^2 .

It is a super-2 number, since 2×1270423720² = 3227952856677276800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1270423723) 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 3 ways as a sum of consecutive naturals, for example, 15880257 + ... + 15880336.

Almost surely, 2^1270423720 is an apocalyptic number.

1270423720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270423720 is an abundant number, since it is smaller than the sum of its proper divisors (1588029740).

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

1270423720 is a wasteful number, since it uses less digits than its factorization.

1270423720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31760604 (or 31760600 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 1270423720 is about 35643.0038015878. The cubic root of 1270423720 is about 1083.0525551369.

The spelling of 1270423720 in words is "one billion, two hundred seventy million, four hundred twenty-three thousand, seven hundred twenty".