212452040 has 16 divisors (see below), whose sum is σ = 478017180. Its totient is φ = 84980800.

The previous prime is 212452003. The next prime is 212452049. The reversal of 212452040 is 40254212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 171976996 + 40475044 = 13114^2 + 6362^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (212452049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2655611 + ... + 2655690.

Almost surely, 2^212452040 is an apocalyptic number.

212452040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212452040 is an abundant number, since it is smaller than the sum of its proper divisors (265565140).

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

212452040 is a wasteful number, since it uses less digits than its factorization.

212452040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311312 (or 5311308 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 212452040 is about 14575.7346298566. The cubic root of 212452040 is about 596.6966988965.

The spelling of 212452040 in words is "two hundred twelve million, four hundred fifty-two thousand, forty".