127123842 has 16 divisors (see below), whose sum is σ = 255868992. Its totient is φ = 42104400.

The previous prime is 127123837. The next prime is 127123847. The reversal of 127123842 is 248321721.

It is an interprime number because it is at equal distance from previous prime (127123837) and next prime (127123847).

It is not an unprimeable number, because it can be changed into a prime (127123847) 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, 66534 + ... + 68417.

It is an arithmetic number, because the mean of its divisors is an integer number (15991812).

Almost surely, 2^127123842 is an apocalyptic number.

127123842 is an abundant number, since it is smaller than the sum of its proper divisors (128745150).

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

127123842 is a wasteful number, since it uses less digits than its factorization.

127123842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135113.

The product of its digits is 5376, while the sum is 30.

The square root of 127123842 is about 11274.9209309866. The cubic root of 127123842 is about 502.8159009660.

The spelling of 127123842 in words is "one hundred twenty-seven million, one hundred twenty-three thousand, eight hundred forty-two".