210426142 has 4 divisors (see below), whose sum is σ = 315639216. Its totient is φ = 105213070.

The previous prime is 210426131. The next prime is 210426143. The reversal of 210426142 is 241624012.

It is a happy number.

210426142 is digitally balanced in base 2, 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 super-2 number, since 2×210426142² = 88558322474008328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210426143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52606534 + ... + 52606537.

It is an arithmetic number, because the mean of its divisors is an integer number (78909804).

Almost surely, 2^210426142 is an apocalyptic number.

210426142 is a deficient number, since it is larger than the sum of its proper divisors (105213074).

210426142 is a wasteful number, since it uses less digits than its factorization.

210426142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105213073.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 210426142 is about 14506.0725904705. The cubic root of 210426142 is about 594.7939799409.

The spelling of 210426142 in words is "two hundred ten million, four hundred twenty-six thousand, one hundred forty-two".