212400034 has 32 divisors (see below), whose sum is σ = 410038272. Its totient is φ = 80082000.

The previous prime is 212399981. The next prime is 212400037. The reversal of 212400034 is 430004212.

It is a super-2 number, since 2×212400034² = 90227548886402312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212399990 and 212400017.

It is not an unprimeable number, because it can be changed into a prime (212400037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17472 + ... + 27019.

It is an arithmetic number, because the mean of its divisors is an integer number (12813696).

Almost surely, 2^212400034 is an apocalyptic number.

212400034 is a deficient number, since it is larger than the sum of its proper divisors (197638238).

212400034 is a wasteful number, since it uses less digits than its factorization.

212400034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44542.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212400034 is about 14573.9505282542. The cubic root of 212400034 is about 596.6480065878.

Adding to 212400034 its reverse (430004212), we get a palindrome (642404246).

The spelling of 212400034 in words is "two hundred twelve million, four hundred thousand, thirty-four".