124142407 has 4 divisors (see below), whose sum is σ = 124836120. Its totient is φ = 123448696.

The previous prime is 124142401. The next prime is 124142423. The reversal of 124142407 is 704241421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124142407 - 2¹⁹ = 123618119 is a prime.

It is a super-2 number, since 2×124142407² = 30822674431507298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124142401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346588 + ... + 346945.

It is an arithmetic number, because the mean of its divisors is an integer number (31209030).

Almost surely, 2^124142407 is an apocalyptic number.

124142407 is a deficient number, since it is larger than the sum of its proper divisors (693713).

124142407 is an equidigital number, since it uses as much as digits as its factorization.

124142407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693712.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 124142407 is about 11141.9211539124. The cubic root of 124142407 is about 498.8539176644.

Adding to 124142407 its reverse (704241421), we get a palindrome (828383828).

The spelling of 124142407 in words is "one hundred twenty-four million, one hundred forty-two thousand, four hundred seven".