126401149 has 4 divisors (see below), whose sum is σ = 144458464. Its totient is φ = 108343836.

The previous prime is 126401147. The next prime is 126401153. The reversal of 126401149 is 941104621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941104621 = 709 ⋅1327369.

It is a cyclic number.

It is not a de Polignac number, because 126401149 - 2¹ = 126401147 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 (126401147) 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, 9028647 + ... + 9028660.

It is an arithmetic number, because the mean of its divisors is an integer number (36114616).

Almost surely, 2^126401149 is an apocalyptic number.

It is an amenable number.

126401149 is a deficient number, since it is larger than the sum of its proper divisors (18057315).

126401149 is an equidigital number, since it uses as much as digits as its factorization.

126401149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18057314.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 126401149 is about 11242.8265574098. The cubic root of 126401149 is about 501.8612614808.

The spelling of 126401149 in words is "one hundred twenty-six million, four hundred one thousand, one hundred forty-nine".