126890651 has 4 divisors (see below), whose sum is σ = 129041400. Its totient is φ = 124739904.

The previous prime is 126890641. The next prime is 126890677. The reversal of 126890651 is 156098621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126890651 - 2⁶ = 126890587 is a prime.

It is a super-2 number, since 2×126890651² = 32202474622407602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126890641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075286 + ... + 1075403.

It is an arithmetic number, because the mean of its divisors is an integer number (32260350).

Almost surely, 2^126890651 is an apocalyptic number.

126890651 is a deficient number, since it is larger than the sum of its proper divisors (2150749).

126890651 is an equidigital number, since it uses as much as digits as its factorization.

126890651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150748.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 126890651 is about 11264.5750474663. The cubic root of 126890651 is about 502.5082641810.

It can be divided in two parts, 1268 and 90651, that added together give a palindrome (91919).

The spelling of 126890651 in words is "one hundred twenty-six million, eight hundred ninety thousand, six hundred fifty-one".