1263121474 has 16 divisors (see below), whose sum is σ = 2001288960. Its totient is φ = 596972880.

The previous prime is 1263121469. The next prime is 1263121513. The reversal of 1263121474 is 4741213621.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

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, 234229 + ... + 239560.

It is an arithmetic number, because the mean of its divisors is an integer number (125080560).

Almost surely, 2^1263121474 is an apocalyptic number.

1263121474 is a deficient number, since it is larger than the sum of its proper divisors (738167486).

1263121474 is a wasteful number, since it uses less digits than its factorization.

1263121474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473865.

The product of its digits is 8064, while the sum is 31.

The square root of 1263121474 is about 35540.4202845155. The cubic root of 1263121474 is about 1080.9734804086.

The spelling of 1263121474 in words is "one billion, two hundred sixty-three million, one hundred twenty-one thousand, four hundred seventy-four".