142210917 has 32 divisors (see below), whose sum is σ = 215859200. Its totient is φ = 92507184.

The previous prime is 142210897. The next prime is 142210931. The reversal of 142210917 is 719012241.

It is not a de Polignac number, because 142210917 - 2¹² = 142206821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142210217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229434 + ... + 230052.

It is an arithmetic number, because the mean of its divisors is an integer number (6745600).

Almost surely, 2^142210917 is an apocalyptic number.

It is an amenable number.

142210917 is a deficient number, since it is larger than the sum of its proper divisors (73648283).

142210917 is a wasteful number, since it uses less digits than its factorization.

142210917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 142210917 is about 11925.2218847282. The cubic root of 142210917 is about 521.9685210242.

The spelling of 142210917 in words is "one hundred forty-two million, two hundred ten thousand, nine hundred seventeen".