212539427 has 8 divisors (see below), whose sum is σ = 217435680. Its totient is φ = 207696960.

The previous prime is 212539421. The next prime is 212539429. The reversal of 212539427 is 724935212.

It is a happy number.

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 212539427 - 2¹² = 212535331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212539421) 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, 5399 + ... + 21312.

It is an arithmetic number, because the mean of its divisors is an integer number (27179460).

Almost surely, 2^212539427 is an apocalyptic number.

212539427 is a deficient number, since it is larger than the sum of its proper divisors (4896253).

212539427 is a wasteful number, since it uses less digits than its factorization.

212539427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26893.

The product of its digits is 30240, while the sum is 35.

The square root of 212539427 is about 14578.7320093347. The cubic root of 212539427 is about 596.7784999259.

The spelling of 212539427 in words is "two hundred twelve million, five hundred thirty-nine thousand, four hundred twenty-seven".