123041551 has 2 divisors, whose sum is σ = 123041552. Its totient is φ = 123041550.

The previous prime is 123041531. The next prime is 123041617. The reversal of 123041551 is 155140321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123041551 - 2⁷ = 123041423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123041531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61520775 + 61520776.

It is an arithmetic number, because the mean of its divisors is an integer number (61520776).

Almost surely, 2^123041551 is an apocalyptic number.

123041551 is a deficient number, since it is larger than the sum of its proper divisors (1).

123041551 is an equidigital number, since it uses as much as digits as its factorization.

123041551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 123041551 is about 11092.4096119824. The cubic root of 123041551 is about 497.3749772961.

Adding to 123041551 its reverse (155140321), we get a palindrome (278181872).

The spelling of 123041551 in words is "one hundred twenty-three million, forty-one thousand, five hundred fifty-one".