124215541 has 2 divisors, whose sum is σ = 124215542. Its totient is φ = 124215540.

The previous prime is 124215523. The next prime is 124215547. The reversal of 124215541 is 145512421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 33108516 = 9545^2 + 5754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124215541 is a prime.

It is a super-3 number, since 3×124215541³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124215547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62107770 + 62107771.

It is an arithmetic number, because the mean of its divisors is an integer number (62107771).

Almost surely, 2^124215541 is an apocalyptic number.

It is an amenable number.

124215541 is a deficient number, since it is larger than the sum of its proper divisors (1).

124215541 is an equidigital number, since it uses as much as digits as its factorization.

124215541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1600, while the sum is 25.

The square root of 124215541 is about 11145.2026002222. The cubic root of 124215541 is about 498.9518590029.

Adding to 124215541 its reverse (145512421), we get a palindrome (269727962).

The spelling of 124215541 in words is "one hundred twenty-four million, two hundred fifteen thousand, five hundred forty-one".