124228780138 has 8 divisors (see below), whose sum is σ = 186356921760. Its totient is φ = 62109806220.

The previous prime is 124228780121. The next prime is 124228780183. The reversal of 124228780138 is 831087822421.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2257948 + ... + 2312311.

It is an arithmetic number, because the mean of its divisors is an integer number (23294615220).

Almost surely, 2^124228780138 is an apocalyptic number.

124228780138 is a deficient number, since it is larger than the sum of its proper divisors (62128141622).

124228780138 is a wasteful number, since it uses less digits than its factorization.

124228780138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583852.

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 124228780138 in words is "one hundred twenty-four billion, two hundred twenty-eight million, seven hundred eighty thousand, one hundred thirty-eight".