1042405425 has 72 divisors (see below), whose sum is σ = 1962177984. Its totient is φ = 527978880.

The previous prime is 1042405381. The next prime is 1042405453. The reversal of 1042405425 is 5245042401.

It is not a de Polignac number, because 1042405425 - 2¹³ = 1042397233 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 811834 + ... + 813116.

It is an arithmetic number, because the mean of its divisors is an integer number (27252472).

Almost surely, 2^1042405425 is an apocalyptic number.

1042405425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1042405425 is a deficient number, since it is larger than the sum of its proper divisors (919772559).

1042405425 is a wasteful number, since it uses less digits than its factorization.

1042405425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1042405425 is about 32286.3039848168. The cubic root of 1042405425 is about 1013.9399174278.

Adding to 1042405425 its reverse (5245042401), we get a palindrome (6287447826).

The spelling of 1042405425 in words is "one billion, forty-two million, four hundred five thousand, four hundred twenty-five".