124061989 has 2 divisors, whose sum is σ = 124061990. Its totient is φ = 124061988.

The previous prime is 124061981. The next prime is 124062011. The reversal of 124061989 is 989160421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117353889 + 6708100 = 10833^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 124061989 - 2³ = 124061981 is a prime.

It is a super-2 number, since 2×124061989² = 30782754229272242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124061981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62030994 + 62030995.

It is an arithmetic number, because the mean of its divisors is an integer number (62030995).

Almost surely, 2^124061989 is an apocalyptic number.

It is an amenable number.

124061989 is a deficient number, since it is larger than the sum of its proper divisors (1).

124061989 is an equidigital number, since it uses as much as digits as its factorization.

124061989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 124061989 is about 11138.3117661520. The cubic root of 124061989 is about 498.7461771513.

The spelling of 124061989 in words is "one hundred twenty-four million, sixty-one thousand, nine hundred eighty-nine".