212744542 has 16 divisors (see below), whose sum is σ = 324235872. Its totient is φ = 104671840.

The previous prime is 212744527. The next prime is 212744573. The reversal of 212744542 is 245447212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95028 + ... + 97240.

It is an arithmetic number, because the mean of its divisors is an integer number (20264742).

Almost surely, 2^212744542 is an apocalyptic number.

212744542 is a deficient number, since it is larger than the sum of its proper divisors (111491330).

212744542 is a wasteful number, since it uses less digits than its factorization.

212744542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963.

The product of its digits is 17920, while the sum is 31.

The square root of 212744542 is about 14585.7650467845. The cubic root of 212744542 is about 596.9704154800.

The spelling of 212744542 in words is "two hundred twelve million, seven hundred forty-four thousand, five hundred forty-two".