1263125390 has 8 divisors (see below), whose sum is σ = 2273625720. Its totient is φ = 505250152.

The previous prime is 1263125389. The next prime is 1263125441. The reversal of 1263125390 is 935213621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63156260 + ... + 63156279.

It is an arithmetic number, because the mean of its divisors is an integer number (284203215).

Almost surely, 2^1263125390 is an apocalyptic number.

1263125390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263125390 is a deficient number, since it is larger than the sum of its proper divisors (1010500330).

1263125390 is a wasteful number, since it uses less digits than its factorization.

1263125390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126312546.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1263125390 is about 35540.4753766744. The cubic root of 1263125390 is about 1080.9745975056.

The spelling of 1263125390 in words is "one billion, two hundred sixty-three million, one hundred twenty-five thousand, three hundred ninety".