212428042 has 8 divisors (see below), whose sum is σ = 322481376. Its totient is φ = 104934252.

The previous prime is 212428031. The next prime is 212428049. The reversal of 212428042 is 240824212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212427998 and 212428016.

It is not an unprimeable number, because it can be changed into a prime (212428049) 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, 639678 + ... + 640009.

It is an arithmetic number, because the mean of its divisors is an integer number (40310172).

Almost surely, 2^212428042 is an apocalyptic number.

212428042 is a deficient number, since it is larger than the sum of its proper divisors (110053334).

212428042 is a wasteful number, since it uses less digits than its factorization.

212428042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279772.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 212428042 is about 14574.9113890960. The cubic root of 212428042 is about 596.6742309761.

The spelling of 212428042 in words is "two hundred twelve million, four hundred twenty-eight thousand, forty-two".