897807242 has 4 divisors (see below), whose sum is σ = 1346710866. Its totient is φ = 448903620.

The previous prime is 897807233. The next prime is 897807263. The reversal of 897807242 is 242708798.

It is a happy number.

897807242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242708798 = 2 ⋅121354399.

It can be written as a sum of positive squares in only one way, i.e., 863713321 + 34093921 = 29389^2 + 5839^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224451809 + ... + 224451812.

Almost surely, 2^897807242 is an apocalyptic number.

897807242 is a deficient number, since it is larger than the sum of its proper divisors (448903624).

897807242 is a wasteful number, since it uses less digits than its factorization.

897807242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448903623.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 897807242 is about 29963.4317460467. The cubic root of 897807242 is about 964.7046415477.

The spelling of 897807242 in words is "eight hundred ninety-seven million, eight hundred seven thousand, two hundred forty-two".