124640427 has 8 divisors (see below), whose sum is σ = 173412864. Its totient is φ = 79480808.

The previous prime is 124640423. The next prime is 124640431. The reversal of 124640427 is 724046421.

It is an interprime number because it is at equal distance from previous prime (124640423) and next prime (124640431).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124640427 - 2² = 124640423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124640394 and 124640403.

It is not an unprimeable number, because it can be changed into a prime (124640423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903123 + ... + 903260.

It is an arithmetic number, because the mean of its divisors is an integer number (21676608).

Almost surely, 2^124640427 is an apocalyptic number.

124640427 is a deficient number, since it is larger than the sum of its proper divisors (48772437).

124640427 is a wasteful number, since it uses less digits than its factorization.

124640427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806409.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 124640427 is about 11164.2477131242. The cubic root of 124640427 is about 499.5201088897.

Adding to 124640427 its reverse (724046421), we get a palindrome (848686848).

The spelling of 124640427 in words is "one hundred twenty-four million, six hundred forty thousand, four hundred twenty-seven".