126191003 has 6 divisors (see below), whose sum is σ = 126759012. Its totient is φ = 125625500.

The previous prime is 126190997. The next prime is 126191033. The reversal of 126191003 is 300191621.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-126191003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126191003.

It is not an unprimeable number, because it can be changed into a prime (126191033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62000 + ... + 64002.

It is an arithmetic number, because the mean of its divisors is an integer number (21126502).

Almost surely, 2^126191003 is an apocalyptic number.

126191003 is a deficient number, since it is larger than the sum of its proper divisors (568009).

126191003 is an frugal number, since it uses more digits than its factorization.

126191003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2254 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 126191003 is about 11233.4768883013. The cubic root of 126191003 is about 501.5829870153.

The spelling of 126191003 in words is "one hundred twenty-six million, one hundred ninety-one thousand, three".