126405140 has 24 divisors (see below), whose sum is σ = 269952480. Its totient is φ = 49704608.

The previous prime is 126405133. The next prime is 126405163. The reversal of 126405140 is 41504621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52382 + ... + 54741.

It is an arithmetic number, because the mean of its divisors is an integer number (11248020).

Almost surely, 2^126405140 is an apocalyptic number.

126405140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126405140 is an abundant number, since it is smaller than the sum of its proper divisors (143547340).

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

126405140 is a wasteful number, since it uses less digits than its factorization.

126405140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107191 (or 107189 counting only the distinct ones).

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

The square root of 126405140 is about 11243.0040469618. The cubic root of 126405140 is about 501.8665433611.

Adding to 126405140 its reverse (41504621), we get a palindrome (167909761).

The spelling of 126405140 in words is "one hundred twenty-six million, four hundred five thousand, one hundred forty".