126212550 has 48 divisors (see below), whose sum is σ = 321480912. Its totient is φ = 32745600.

The previous prime is 126212549. The next prime is 126212551. The reversal of 126212550 is 55212621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126212549) and next prime (126212551).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126212550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126212551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5821 + ... + 16920.

It is an arithmetic number, because the mean of its divisors is an integer number (6697519).

Almost surely, 2^126212550 is an apocalyptic number.

126212550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126212550 is an abundant number, since it is smaller than the sum of its proper divisors (195268362).

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

126212550 is a wasteful number, since it uses less digits than its factorization.

126212550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22793 (or 22788 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 126212550 is about 11234.4359003913. The cubic root of 126212550 is about 501.6115336715.

The spelling of 126212550 in words is "one hundred twenty-six million, two hundred twelve thousand, five hundred fifty".