212142975 has 48 divisors (see below), whose sum is σ = 395867520. Its totient is φ = 99299200.

The previous prime is 212142967. The next prime is 212142989. The reversal of 212142975 is 579241212.

It is not a de Polignac number, because 212142975 - 2³ = 212142967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19492 + ... + 28358.

It is an arithmetic number, because the mean of its divisors is an integer number (8247240).

Almost surely, 2^212142975 is an apocalyptic number.

212142975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

212142975 is a deficient number, since it is larger than the sum of its proper divisors (183724545).

212142975 is a wasteful number, since it uses less digits than its factorization.

212142975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8920 (or 8915 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 212142975 is about 14565.1287326958. The cubic root of 212142975 is about 596.4072099290.

The spelling of 212142975 in words is "two hundred twelve million, one hundred forty-two thousand, nine hundred seventy-five".