210146542 has 4 divisors (see below), whose sum is σ = 315219816. Its totient is φ = 105073270.

The previous prime is 210146539. The next prime is 210146543. The reversal of 210146542 is 245641012.

It is a happy number.

210146542 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 2×210146542² = 88323138229115528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210146543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52536634 + ... + 52536637.

It is an arithmetic number, because the mean of its divisors is an integer number (78804954).

Almost surely, 2^210146542 is an apocalyptic number.

210146542 is a deficient number, since it is larger than the sum of its proper divisors (105073274).

210146542 is a wasteful number, since it uses less digits than its factorization.

210146542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105073273.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 210146542 is about 14496.4320437824. The cubic root of 210146542 is about 594.5304225273.

Adding to 210146542 its reverse (245641012), we get a palindrome (455787554).

It can be divided in two parts, 21014 and 6542, that added together give a square (27556 = 166²).

The spelling of 210146542 in words is "two hundred ten million, one hundred forty-six thousand, five hundred forty-two".