124280381 has 2 divisors, whose sum is σ = 124280382. Its totient is φ = 124280380.

The previous prime is 124280371. The next prime is 124280417. The reversal of 124280381 is 183082421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120012025 + 4268356 = 10955^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 124280381 - 2¹⁰ = 124279357 is a prime.

It is a super-2 number, since 2×124280381² = 30891226203010322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124280371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62140190 + 62140191.

It is an arithmetic number, because the mean of its divisors is an integer number (62140191).

Almost surely, 2^124280381 is an apocalyptic number.

It is an amenable number.

124280381 is a deficient number, since it is larger than the sum of its proper divisors (1).

124280381 is an equidigital number, since it uses as much as digits as its factorization.

124280381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 124280381 is about 11148.1110956072. Note that the first 3 decimals coincide. The cubic root of 124280381 is about 499.0386608386.

The spelling of 124280381 in words is "one hundred twenty-four million, two hundred eighty thousand, three hundred eighty-one".