642153297 has 8 divisors (see below), whose sum is σ = 856375200. Its totient is φ = 428016800.

The previous prime is 642153287. The next prime is 642153301. The reversal of 642153297 is 792351246.

642153297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642153297 - 2¹² = 642149201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642153287) 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, 1047 + ... + 35852.

It is an arithmetic number, because the mean of its divisors is an integer number (107046900).

Almost surely, 2^642153297 is an apocalyptic number.

It is an amenable number.

642153297 is a deficient number, since it is larger than the sum of its proper divisors (214221903).

642153297 is a wasteful number, since it uses less digits than its factorization.

642153297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42703.

The product of its digits is 90720, while the sum is 39.

The square root of 642153297 is about 25340.7438130770. The cubic root of 642153297 is about 862.7392811427.

The spelling of 642153297 in words is "six hundred forty-two million, one hundred fifty-three thousand, two hundred ninety-seven".