1243188104 has 16 divisors (see below), whose sum is σ = 2468094300. Its totient is φ = 585029632.

The previous prime is 1243188097. The next prime is 1243188119. The reversal of 1243188104 is 4018813421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1018248100 + 224940004 = 31910^2 + 14998^2 .

It is a super-2 number, since 2×1243188104² = 3091033323854229632, which contains 22 as substring.

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, 4570409 + ... + 4570680.

Almost surely, 2^1243188104 is an apocalyptic number.

It is an amenable number.

1243188104 is a deficient number, since it is larger than the sum of its proper divisors (1224906196).

1243188104 is a wasteful number, since it uses less digits than its factorization.

1243188104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9141112 (or 9141108 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1243188104 is about 35258.8726989392. The cubic root of 1243188104 is about 1075.2570083897.

The spelling of 1243188104 in words is "one billion, two hundred forty-three million, one hundred eighty-eight thousand, one hundred four".