1424135185261 has 4 divisors (see below), whose sum is σ = 1424139645724. Its totient is φ = 1424130724800.

The previous prime is 1424135185243. The next prime is 1424135185289. The reversal of 1424135185261 is 1625815314241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 362680972900 + 1061454212361 = 602230^2 + 1030269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424135185261 - 2²⁵ = 1424101630829 is a prime.

It is a super-2 number, since 2×1424135185261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424135185961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711020 + ... + 2403301.

It is an arithmetic number, because the mean of its divisors is an integer number (356034911431).

Almost surely, 2^{1424135185261} is an apocalyptic number.

It is an amenable number.

1424135185261 is a deficient number, since it is larger than the sum of its proper divisors (4460463).

1424135185261 is an equidigital number, since it uses as much as digits as its factorization.

1424135185261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460462.

The product of its digits is 230400, while the sum is 43.

The spelling of 1424135185261 in words is "one trillion, four hundred twenty-four billion, one hundred thirty-five million, one hundred eighty-five thousand, two hundred sixty-one".