126241551 has 8 divisors (see below), whose sum is σ = 187024560. Its totient is φ = 84161016.

The previous prime is 126241547. The next prime is 126241559. The reversal of 126241551 is 155142621.

126241551 is a `hidden beast` number, since 12 + 62 + 41 + 551 = 666.

It is not a de Polignac number, because 126241551 - 2² = 126241547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4675613 = 126241551 / (1 + 2 + 6 + 2 + 4 + 1 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126241559) 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, 2337780 + ... + 2337833.

It is an arithmetic number, because the mean of its divisors is an integer number (23378070).

Almost surely, 2^126241551 is an apocalyptic number.

126241551 is a deficient number, since it is larger than the sum of its proper divisors (60783009).

126241551 is an equidigital number, since it uses as much as digits as its factorization.

126241551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675622 (or 4675616 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 126241551 is about 11235.7265452662. The cubic root of 126241551 is about 501.6499506699.

The spelling of 126241551 in words is "one hundred twenty-six million, two hundred forty-one thousand, five hundred fifty-one".