124200042 has 16 divisors (see below), whose sum is σ = 249702912. Its totient is φ = 41182880.

The previous prime is 124200019. The next prime is 124200047. The reversal of 124200042 is 240002421.

It is a junction number, because it is equal to n+sod(n) for n = 124199994 and 124200030.

It is not an unprimeable number, because it can be changed into a prime (124200047) 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, 53043 + ... + 55334.

It is an arithmetic number, because the mean of its divisors is an integer number (15606432).

Almost surely, 2^124200042 is an apocalyptic number.

124200042 is an abundant number, since it is smaller than the sum of its proper divisors (125502870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124200042 is a wasteful number, since it uses less digits than its factorization.

124200042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108573.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 124200042 is about 11144.5072569405. The cubic root of 124200042 is about 498.9311058924.

Adding to 124200042 its reverse (240002421), we get a palindrome (364202463).

The spelling of 124200042 in words is "one hundred twenty-four million, two hundred thousand, forty-two".