212432742 has 24 divisors (see below), whose sum is σ = 460774080. Its totient is φ = 70733520.

The previous prime is 212432741. The next prime is 212432747. The reversal of 212432742 is 247234212.

212432742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212432741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11884 + ... + 23792.

It is an arithmetic number, because the mean of its divisors is an integer number (19198920).

Almost surely, 2^212432742 is an apocalyptic number.

212432742 is an abundant number, since it is smaller than the sum of its proper divisors (248341338).

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

212432742 is a wasteful number, since it uses less digits than its factorization.

212432742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12908 (or 12905 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 212432742 is about 14575.0726241758. The cubic root of 212432742 is about 596.6786314438.

Adding to 212432742 its reverse (247234212), we get a palindrome (459666954).

The spelling of 212432742 in words is "two hundred twelve million, four hundred thirty-two thousand, seven hundred forty-two".