897724142 has 16 divisors (see below), whose sum is σ = 1560632832. Its totient is φ = 379319640.

The previous prime is 897724067. The next prime is 897724153. The reversal of 897724142 is 241427798.

It is a junction number, because it is equal to n+sod(n) for n = 897724093 and 897724102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450578 + ... + 452565.

It is an arithmetic number, because the mean of its divisors is an integer number (97539552).

Almost surely, 2^897724142 is an apocalyptic number.

897724142 is a deficient number, since it is larger than the sum of its proper divisors (662908690).

897724142 is a wasteful number, since it uses less digits than its factorization.

897724142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903223.

The product of its digits is 225792, while the sum is 44.

The square root of 897724142 is about 29962.0450236629. The cubic root of 897724142 is about 964.6748766474.

The spelling of 897724142 in words is "eight hundred ninety-seven million, seven hundred twenty-four thousand, one hundred forty-two".