1405425123 has 12 divisors (see below), whose sum is σ = 2041401960. Its totient is φ = 931714656.

The previous prime is 1405425103. The next prime is 1405425157. The reversal of 1405425123 is 3215245041.

1405425123 is a `hidden beast` number, since 1 + 405 + 4 + 251 + 2 + 3 = 666.

It is not a de Polignac number, because 1405425123 - 2⁶ = 1405425059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1405425103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434586 + ... + 437807.

It is an arithmetic number, because the mean of its divisors is an integer number (170116830).

Almost surely, 2^1405425123 is an apocalyptic number.

1405425123 is a deficient number, since it is larger than the sum of its proper divisors (635976837).

1405425123 is a wasteful number, since it uses less digits than its factorization.

1405425123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872578 (or 872575 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1405425123 is about 37489.0000266745. Note that the first 4 decimals coincide. The cubic root of 1405425123 is about 1120.1320855594.

The spelling of 1405425123 in words is "one billion, four hundred five million, four hundred twenty-five thousand, one hundred twenty-three".