381024127642 has 4 divisors (see below), whose sum is σ = 571536191466. Its totient is φ = 190512063820.

The previous prime is 381024127573. The next prime is 381024127697. The reversal of 381024127642 is 246721420183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246721420183 = 7 ⋅35245917169.

It can be written as a sum of positive squares in only one way, i.e., 200085341481 + 180938786161 = 447309^2 + 425369^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 381024127595 and 381024127604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95256031909 + ... + 95256031912.

Almost surely, 2^381024127642 is an apocalyptic number.

381024127642 is a deficient number, since it is larger than the sum of its proper divisors (190512063824).

381024127642 is a wasteful number, since it uses less digits than its factorization.

381024127642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190512063823.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 381024127642 in words is "three hundred eighty-one billion, twenty-four million, one hundred twenty-seven thousand, six hundred forty-two".