126989003 has 4 divisors (see below), whose sum is σ = 132510288. Its totient is φ = 121467720.

The previous prime is 126988993. The next prime is 126989011. The reversal of 126989003 is 300989621.

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 126989003 - 2⁴ = 126988987 is a prime.

It is a super-2 number, since 2×126989003² = 32252413765868018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126989903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760608 + ... + 2760653.

It is an arithmetic number, because the mean of its divisors is an integer number (33127572).

Almost surely, 2^126989003 is an apocalyptic number.

126989003 is a deficient number, since it is larger than the sum of its proper divisors (5521285).

126989003 is an equidigital number, since it uses as much as digits as its factorization.

126989003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521284.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 126989003 is about 11268.9397460453. The cubic root of 126989003 is about 502.6380607916.

The spelling of 126989003 in words is "one hundred twenty-six million, nine hundred eighty-nine thousand, three".