124005142 has 4 divisors (see below), whose sum is σ = 186007716. Its totient is φ = 62002570.

The previous prime is 124005137. The next prime is 124005143. The reversal of 124005142 is 241500421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124005143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31001284 + ... + 31001287.

It is an arithmetic number, because the mean of its divisors is an integer number (46501929).

Almost surely, 2^124005142 is an apocalyptic number.

124005142 is a deficient number, since it is larger than the sum of its proper divisors (62002574).

124005142 is an equidigital number, since it uses as much as digits as its factorization.

124005142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62002573.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 124005142 is about 11135.7596058823. The cubic root of 124005142 is about 498.6699879394.

Adding to 124005142 its reverse (241500421), we get a palindrome (365505563).

The spelling of 124005142 in words is "one hundred twenty-four million, five thousand, one hundred forty-two".