212140554 has 32 divisors (see below), whose sum is σ = 435347136. Its totient is φ = 68891520.

The previous prime is 212140547. The next prime is 212140561. The reversal of 212140554 is 455041212.

It is an interprime number because it is at equal distance from previous prime (212140547) and next prime (212140561).

It is a super-2 number, since 2×212140554² = 90007229302853832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36454 + ... + 41870.

It is an arithmetic number, because the mean of its divisors is an integer number (13604598).

Almost surely, 2^212140554 is an apocalyptic number.

212140554 is an abundant number, since it is smaller than the sum of its proper divisors (223206582).

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

212140554 is a wasteful number, since it uses less digits than its factorization.

212140554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 212140554 is about 14565.0456229975. The cubic root of 212140554 is about 596.4049411645.

Adding to 212140554 its reverse (455041212), we get a palindrome (667181766).

The spelling of 212140554 in words is "two hundred twelve million, one hundred forty thousand, five hundred fifty-four".