1269036142 has 24 divisors (see below), whose sum is σ = 2094750000. Its totient is φ = 576169440.

The previous prime is 1269036127. The next prime is 1269036149. The reversal of 1269036142 is 2416309621.

It is a happy number.

It is a super-2 number, since 2×1269036142² = 3220905459404488328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1269036098 and 1269036107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269036149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251359 + ... + 256357.

It is an arithmetic number, because the mean of its divisors is an integer number (87281250).

Almost surely, 2^1269036142 is an apocalyptic number.

1269036142 is a deficient number, since it is larger than the sum of its proper divisors (825713858).

1269036142 is a wasteful number, since it uses less digits than its factorization.

1269036142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072 (or 6061 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1269036142 is about 35623.5335417474. The cubic root of 1269036142 is about 1082.6581021310.

The spelling of 1269036142 in words is "one billion, two hundred sixty-nine million, thirty-six thousand, one hundred forty-two".