212007142 has 4 divisors (see below), whose sum is σ = 318010716. Its totient is φ = 106003570.

The previous prime is 212007137. The next prime is 212007143. The reversal of 212007142 is 241700212.

It is a happy number.

212007142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212007143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53001784 + ... + 53001787.

It is an arithmetic number, because the mean of its divisors is an integer number (79502679).

Almost surely, 2^212007142 is an apocalyptic number.

212007142 is a deficient number, since it is larger than the sum of its proper divisors (106003574).

212007142 is a wasteful number, since it uses less digits than its factorization.

212007142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106003573.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 212007142 is about 14560.4650337824. The cubic root of 212007142 is about 596.2798915847.

Adding to 212007142 its reverse (241700212), we get a palindrome (453707354).

The spelling of 212007142 in words is "two hundred twelve million, seven thousand, one hundred forty-two".