425424123 has 16 divisors (see below), whose sum is σ = 657661440. Its totient is φ = 271284552.

The previous prime is 425424101. The next prime is 425424137. The reversal of 425424123 is 321424524.

It is not a de Polignac number, because 425424123 - 2⁵ = 425424091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (425424143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341911 + ... + 343152.

It is an arithmetic number, because the mean of its divisors is an integer number (41103840).

Almost surely, 2^425424123 is an apocalyptic number.

425424123 is a deficient number, since it is larger than the sum of its proper divisors (232237317).

425424123 is a wasteful number, since it uses less digits than its factorization.

425424123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685095 (or 685089 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 425424123 is about 20625.8120567409. The cubic root of 425424123 is about 752.0973135674.

Adding to 425424123 its reverse (321424524), we get a palindrome (746848647).

It can be divided in two parts, 42542 and 4123, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 425424123 in words is "four hundred twenty-five million, four hundred twenty-four thousand, one hundred twenty-three".