1406235140 has 12 divisors (see below), whose sum is σ = 2953093836. Its totient is φ = 562494048.

The previous prime is 1406235119. The next prime is 1406235151. The reversal of 1406235140 is 415326041.

It can be written as a sum of positive squares in 2 ways, for example, as 426670336 + 979564804 = 20656^2 + 31298^2 .

It is an unprimeable number.

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, 35155859 + ... + 35155898.

It is an arithmetic number, because the mean of its divisors is an integer number (246091153).

Almost surely, 2^1406235140 is an apocalyptic number.

1406235140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406235140 is an abundant number, since it is smaller than the sum of its proper divisors (1546858696).

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

1406235140 is a wasteful number, since it uses less digits than its factorization.

1406235140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70311766 (or 70311764 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1406235140 is about 37499.8018661432. The cubic root of 1406235140 is about 1120.3472403336.

Subtracting from 1406235140 its reverse (415326041), we obtain a palindrome (990909099).

The spelling of 1406235140 in words is "one billion, four hundred six million, two hundred thirty-five thousand, one hundred forty".