212739742 has 8 divisors (see below), whose sum is σ = 332984016. Its totient is φ = 101745072.

The previous prime is 212739691. The next prime is 212739743. The reversal of 212739742 is 247937212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212739743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312343 + ... + 2312434.

It is an arithmetic number, because the mean of its divisors is an integer number (41623002).

Almost surely, 2^212739742 is an apocalyptic number.

212739742 is a deficient number, since it is larger than the sum of its proper divisors (120244274).

212739742 is a wasteful number, since it uses less digits than its factorization.

212739742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624802.

The product of its digits is 42336, while the sum is 37.

The square root of 212739742 is about 14585.6005018648. The cubic root of 212739742 is about 596.9659257768.

The spelling of 212739742 in words is "two hundred twelve million, seven hundred thirty-nine thousand, seven hundred forty-two".