1235449642 has 32 divisors (see below), whose sum is σ = 2175091200. Its totient is φ = 526060080.

The previous prime is 1235449613. The next prime is 1235449651. The reversal of 1235449642 is 2469445321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1235449595 and 1235449604.

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, 101967 + ... + 113437.

It is an arithmetic number, because the mean of its divisors is an integer number (67971600).

Almost surely, 2^1235449642 is an apocalyptic number.

1235449642 is a deficient number, since it is larger than the sum of its proper divisors (939641558).

1235449642 is a wasteful number, since it uses less digits than its factorization.

1235449642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11651 (or 11637 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 1235449642 is about 35148.9635978075. The cubic root of 1235449642 is about 1073.0213155224.

The spelling of 1235449642 in words is "one billion, two hundred thirty-five million, four hundred forty-nine thousand, six hundred forty-two".