212791542 has 16 divisors (see below), whose sum is σ = 429561792. Its totient is φ = 70267400.

The previous prime is 212791541. The next prime is 212791549. The reversal of 212791542 is 245197212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212791541) 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 7 ways as a sum of consecutive naturals, for example, 165084 + ... + 166367.

It is an arithmetic number, because the mean of its divisors is an integer number (26847612).

Almost surely, 2^212791542 is an apocalyptic number.

212791542 is an abundant number, since it is smaller than the sum of its proper divisors (216770250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212791542 is a wasteful number, since it uses less digits than its factorization.

212791542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331563.

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

The square root of 212791542 is about 14587.3761177259. The cubic root of 212791542 is about 597.0143735895.

The spelling of 212791542 in words is "two hundred twelve million, seven hundred ninety-one thousand, five hundred forty-two".