1405138004 has 24 divisors (see below), whose sum is σ = 2524212768. Its totient is φ = 684038880.

The previous prime is 1405138001. The next prime is 1405138037. The reversal of 1405138004 is 4008315041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405138001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41639 + ... + 67409.

It is an arithmetic number, because the mean of its divisors is an integer number (105175532).

Almost surely, 2^1405138004 is an apocalyptic number.

It is an amenable number.

1405138004 is a deficient number, since it is larger than the sum of its proper divisors (1119074764).

1405138004 is a wasteful number, since it uses less digits than its factorization.

1405138004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26135 (or 26133 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1405138004 is about 37485.1704544611. The cubic root of 1405138004 is about 1120.0558018541.

The spelling of 1405138004 in words is "one billion, four hundred five million, one hundred thirty-eight thousand, four".