213126054 has 32 divisors (see below), whose sum is σ = 447482880. Its totient is φ = 67581600.

The previous prime is 213126041. The next prime is 213126071. The reversal of 213126054 is 450621312.

It is a super-2 number, since 2×213126054² = 90845429787221832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1264 + ... + 20684.

It is an arithmetic number, because the mean of its divisors is an integer number (13983840).

Almost surely, 2^213126054 is an apocalyptic number.

213126054 is an abundant number, since it is smaller than the sum of its proper divisors (234356826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213126054 is a wasteful number, since it uses less digits than its factorization.

213126054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19516.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 213126054 is about 14598.8374194660. The cubic root of 213126054 is about 597.3270487913.

Adding to 213126054 its reverse (450621312), we get a palindrome (663747366).

The spelling of 213126054 in words is "two hundred thirteen million, one hundred twenty-six thousand, fifty-four".