126546991 has 8 divisors (see below), whose sum is σ = 131661824. Its totient is φ = 121496760.

The previous prime is 126546977. The next prime is 126547009. The reversal of 126546991 is 199645621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126546991 - 2²¹ = 124449839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126546911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12135 + ... + 20008.

It is an arithmetic number, because the mean of its divisors is an integer number (16457728).

Almost surely, 2^126546991 is an apocalyptic number.

126546991 is a deficient number, since it is larger than the sum of its proper divisors (5114833).

126546991 is a wasteful number, since it uses less digits than its factorization.

126546991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32301.

The product of its digits is 116640, while the sum is 43.

The square root of 126546991 is about 11249.3106899934. The cubic root of 126546991 is about 502.0542036041.

The spelling of 126546991 in words is "one hundred twenty-six million, five hundred forty-six thousand, nine hundred ninety-one".