1245534642 has 48 divisors (see below), whose sum is σ = 2950264512. Its totient is φ = 376630560.

The previous prime is 1245534629. The next prime is 1245534679. The reversal of 1245534642 is 2464355421.

1245534642 is a `hidden beast` number, since 1 + 2 + 4 + 5 + 5 + 3 + 4 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1245534597 and 1245534606.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89968 + ... + 102884.

It is an arithmetic number, because the mean of its divisors is an integer number (61463844).

Almost surely, 2^1245534642 is an apocalyptic number.

1245534642 is an abundant number, since it is smaller than the sum of its proper divisors (1704729870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245534642 is a wasteful number, since it uses less digits than its factorization.

1245534642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13423 (or 13420 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 1245534642 is about 35292.1328627217. The cubic root of 1245534642 is about 1075.9331049516.

The spelling of 1245534642 in words is "one billion, two hundred forty-five million, five hundred thirty-four thousand, six hundred forty-two".