210342153 has 24 divisors (see below), whose sum is σ = 340435008. Its totient is φ = 114967776.

The previous prime is 210342137. The next prime is 210342193. The reversal of 210342153 is 351243012.

It is not a de Polignac number, because 210342153 - 2⁴ = 210342137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210342193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27726 + ... + 34487.

It is an arithmetic number, because the mean of its divisors is an integer number (14184792).

Almost surely, 2^210342153 is an apocalyptic number.

210342153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

210342153 is a deficient number, since it is larger than the sum of its proper divisors (130092855).

210342153 is a wasteful number, since it uses less digits than its factorization.

210342153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62253 (or 62246 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 210342153 is about 14503.1773415345. The cubic root of 210342153 is about 594.7148345156.

Adding to 210342153 its reverse (351243012), we get a palindrome (561585165).

The spelling of 210342153 in words is "two hundred ten million, three hundred forty-two thousand, one hundred fifty-three".