1400001262729 has 8 divisors (see below), whose sum is σ = 1407289919112. Its totient is φ = 1392712965120.

The previous prime is 1400001262711. The next prime is 1400001262739. The reversal of 1400001262729 is 9272621000041.

It can be written as a sum of positive squares in 4 ways, for example, as 23333173504 + 1376668089225 = 152752^2 + 1173315^2 .

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 1400001262729 - 2¹⁷ = 1400001131657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400001262694 and 1400001262703.

It is not an unprimeable number, because it can be changed into a prime (1400001262739) 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, 11865027 + ... + 11982439.

It is an arithmetic number, because the mean of its divisors is an integer number (175911239889).

Almost surely, 2^{1400001262729} is an apocalyptic number.

It is an amenable number.

1400001262729 is a deficient number, since it is larger than the sum of its proper divisors (7288656383).

1400001262729 is a wasteful number, since it uses less digits than its factorization.

1400001262729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179387.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 1400001262729 in words is "one trillion, four hundred billion, one million, two hundred sixty-two thousand, seven hundred twenty-nine".