1392225842 has 16 divisors (see below), whose sum is σ = 2400010560. Its totient is φ = 593333808.

The previous prime is 1392225833. The next prime is 1392225847. The reversal of 1392225842 is 2485222931.

It is a junction number, because it is equal to n+sod(n) for n = 1392225796 and 1392225805.

It is not an unprimeable number, because it can be changed into a prime (1392225847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275273 + ... + 280284.

It is an arithmetic number, because the mean of its divisors is an integer number (150000660).

Almost surely, 2^1392225842 is an apocalyptic number.

1392225842 is a deficient number, since it is larger than the sum of its proper divisors (1007784718).

1392225842 is a wasteful number, since it uses less digits than its factorization.

1392225842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555745.

The product of its digits is 69120, while the sum is 38.

The square root of 1392225842 is about 37312.5426900928. The cubic root of 1392225842 is about 1116.6144153566.

The spelling of 1392225842 in words is "one billion, three hundred ninety-two million, two hundred twenty-five thousand, eight hundred forty-two".