127221142 has 8 divisors (see below), whose sum is σ = 199128816. Its totient is φ = 60844872.

The previous prime is 127221121. The next prime is 127221167. The reversal of 127221142 is 241122721.

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

It is a super-3 number, since 3×127221142³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

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, 1382793 + ... + 1382884.

It is an arithmetic number, because the mean of its divisors is an integer number (24891102).

Almost surely, 2^127221142 is an apocalyptic number.

127221142 is a deficient number, since it is larger than the sum of its proper divisors (71907674).

127221142 is a wasteful number, since it uses less digits than its factorization.

127221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765702.

The product of its digits is 448, while the sum is 22.

The square root of 127221142 is about 11279.2349917891. The cubic root of 127221142 is about 502.9441525713.

Adding to 127221142 its reverse (241122721), we get a palindrome (368343863).

The spelling of 127221142 in words is "one hundred twenty-seven million, two hundred twenty-one thousand, one hundred forty-two".