126215010 has 40 divisors (see below), whose sum is σ = 339380316. Its totient is φ = 33657120.

The previous prime is 126215009. The next prime is 126215017. The reversal of 126215010 is 10512621.

It can be written as a sum of positive squares in 2 ways, for example, as 122744241 + 3470769 = 11079^2 + 1863^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (126215017) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77101 + ... + 78720.

Almost surely, 2^126215010 is an apocalyptic number.

126215010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126215010 is an abundant number, since it is smaller than the sum of its proper divisors (213165306).

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

126215010 is a wasteful number, since it uses less digits than its factorization.

126215010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155840 (or 155831 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 126215010 is about 11234.5453846607. The cubic root of 126215010 is about 501.6147926088.

Adding to 126215010 its reverse (10512621), we get a palindrome (136727631).

The spelling of 126215010 in words is "one hundred twenty-six million, two hundred fifteen thousand, ten".