127442278990 has 32 divisors (see below), whose sum is σ = 252787129056. Its totient is φ = 45961292160.

The previous prime is 127442278969. The next prime is 127442279039. The reversal of 127442278990 is 99872244721.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11393541 + ... + 11404720.

It is an arithmetic number, because the mean of its divisors is an integer number (7899597783).

Almost surely, 2^127442278990 is an apocalyptic number.

127442278990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127442278990 is a deficient number, since it is larger than the sum of its proper divisors (125344850066).

127442278990 is a wasteful number, since it uses less digits than its factorization.

127442278990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22798324.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 127442278990 in words is "one hundred twenty-seven billion, four hundred forty-two million, two hundred seventy-eight thousand, nine hundred ninety".