123451487 has 2 divisors, whose sum is σ = 123451488. Its totient is φ = 123451486.

The previous prime is 123451481. The next prime is 123451553. The reversal of 123451487 is 784154321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123451487 - 2¹² = 123447391 is a prime.

It is a super-2 number, since 2×123451487² = 30480539285022338, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123451481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61725743 + 61725744.

It is an arithmetic number, because the mean of its divisors is an integer number (61725744).

Almost surely, 2^123451487 is an apocalyptic number.

123451487 is a deficient number, since it is larger than the sum of its proper divisors (1).

123451487 is an equidigital number, since it uses as much as digits as its factorization.

123451487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 123451487 is about 11110.8724679928. The cubic root of 123451487 is about 497.9267309937.

The spelling of 123451487 in words is "one hundred twenty-three million, four hundred fifty-one thousand, four hundred eighty-seven".