212452340 has 24 divisors (see below), whose sum is σ = 446441352. Its totient is φ = 84925440.

The previous prime is 212452337. The next prime is 212452343. The reversal of 212452340 is 43254212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212452337) and next prime (212452343).

It can be written as a sum of positive squares in 4 ways, for example, as 5207524 + 207244816 = 2282^2 + 14396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212452343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43292 + ... + 47948.

It is an arithmetic number, because the mean of its divisors is an integer number (18601723).

Almost surely, 2^212452340 is an apocalyptic number.

212452340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212452340 is an abundant number, since it is smaller than the sum of its proper divisors (233989012).

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

212452340 is a wasteful number, since it uses less digits than its factorization.

212452340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947 (or 6945 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212452340 is about 14575.7449209294. The cubic root of 212452340 is about 596.6969797582.

The spelling of 212452340 in words is "two hundred twelve million, four hundred fifty-two thousand, three hundred forty".