1003401266 has 32 divisors (see below), whose sum is σ = 1812734208. Its totient is φ = 407246400.

The previous prime is 1003401257. The next prime is 1003401277. The reversal of 1003401266 is 6621043001.

It is a happy number.

It is a super-2 number, since 2×1003401266² = 2013628201220805512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17096 + ... + 47948.

It is an arithmetic number, because the mean of its divisors is an integer number (56647944).

Almost surely, 2^1003401266 is an apocalyptic number.

1003401266 is a deficient number, since it is larger than the sum of its proper divisors (809332942).

1003401266 is a wasteful number, since it uses less digits than its factorization.

1003401266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30986.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1003401266 is about 31676.5096877797. The cubic root of 1003401266 is about 1001.1324723556.

Adding to 1003401266 its reverse (6621043001), we get a palindrome (7624444267).

The spelling of 1003401266 in words is "one billion, three million, four hundred one thousand, two hundred sixty-six".