903947642 has 16 divisors (see below), whose sum is σ = 1465915752. Its totient is φ = 415580160.

The previous prime is 903947641. The next prime is 903947683. The reversal of 903947642 is 246749309.

It can be written as a sum of positive squares in 4 ways, for example, as 897541681 + 6405961 = 29959^2 + 2531^2 .

It is a junction number, because it is equal to n+sod(n) for n = 903947593 and 903947602.

It is not an unprimeable number, because it can be changed into a prime (903947641) 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, 60959 + ... + 74322.

Almost surely, 2^903947642 is an apocalyptic number.

903947642 is a deficient number, since it is larger than the sum of its proper divisors (561968110).

903947642 is a wasteful number, since it uses less digits than its factorization.

903947642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135553.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 903947642 is about 30065.7220435499. The cubic root of 903947642 is about 966.8989577046.

The spelling of 903947642 in words is "nine hundred three million, nine hundred forty-seven thousand, six hundred forty-two".