1400142605 has 16 divisors (see below), whose sum is σ = 1727613360. Its totient is φ = 1088875008.

The previous prime is 1400142589. The next prime is 1400142607. The reversal of 1400142605 is 5062410041.

It can be written as a sum of positive squares in 8 ways, for example, as 55160329 + 1344982276 = 7427^2 + 36674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400142605 - 2⁴ = 1400142589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400142607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4649 + ... + 53121.

It is an arithmetic number, because the mean of its divisors is an integer number (107975835).

Almost surely, 2^1400142605 is an apocalyptic number.

It is an amenable number.

1400142605 is a deficient number, since it is larger than the sum of its proper divisors (327470755).

1400142605 is a wasteful number, since it uses less digits than its factorization.

1400142605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48640.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1400142605 is about 37418.4794586846. The cubic root of 1400142605 is about 1118.7269242767.

Adding to 1400142605 its reverse (5062410041), we get a palindrome (6462552646).

The spelling of 1400142605 in words is "one billion, four hundred million, one hundred forty-two thousand, six hundred five".