1245944142 has 24 divisors (see below), whose sum is σ = 2772507816. Its totient is φ = 404089776.

The previous prime is 1245944137. The next prime is 1245944149. The reversal of 1245944142 is 2414495421.

1245944142 is a `hidden beast` number, since 1 + 24 + 594 + 4 + 1 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1245944097 and 1245944106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245944149) 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, 934728 + ... + 936059.

It is an arithmetic number, because the mean of its divisors is an integer number (115521159).

Almost surely, 2^1245944142 is an apocalyptic number.

1245944142 is an abundant number, since it is smaller than the sum of its proper divisors (1526563674).

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

1245944142 is a wasteful number, since it uses less digits than its factorization.

1245944142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870832 (or 1870829 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1245944142 is about 35297.9339622024. The cubic root of 1245944142 is about 1076.0510051461.

The spelling of 1245944142 in words is "one billion, two hundred forty-five million, nine hundred forty-four thousand, one hundred forty-two".