1272406531 has 8 divisors (see below), whose sum is σ = 1469731824. Its totient is φ = 1088689920.

The previous prime is 1272406477. The next prime is 1272406547. The reversal of 1272406531 is 1356042721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272406531 - 2¹³ = 1272398339 is a prime.

It is a super-2 number, since 2×1272406531² = 3238036760262907922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1272406493 and 1272406502.

It is not an unprimeable number, because it can be changed into a prime (1272406591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3401970 + ... + 3402343.

It is an arithmetic number, because the mean of its divisors is an integer number (183716478).

Almost surely, 2^1272406531 is an apocalyptic number.

1272406531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1272406531 is a deficient number, since it is larger than the sum of its proper divisors (197325293).

1272406531 is a wasteful number, since it uses less digits than its factorization.

1272406531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804341.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1272406531 is about 35670.8078265688. The cubic root of 1272406531 is about 1083.6157195428.

The spelling of 1272406531 in words is "one billion, two hundred seventy-two million, four hundred six thousand, five hundred thirty-one".