127921036 has 6 divisors (see below), whose sum is σ = 223861820. Its totient is φ = 63960516.

The previous prime is 127921033. The next prime is 127921043. The reversal of 127921036 is 630129721.

It is a junction number, because it is equal to n+sod(n) for n = 127920989 and 127921007.

It is not an unprimeable number, because it can be changed into a prime (127921033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15990126 + ... + 15990133.

Almost surely, 2^127921036 is an apocalyptic number.

It is an amenable number.

127921036 is a deficient number, since it is larger than the sum of its proper divisors (95940784).

127921036 is a wasteful number, since it uses less digits than its factorization.

127921036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980263 (or 31980261 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 127921036 is about 11310.2182118649. The cubic root of 127921036 is about 503.8647648838.

The spelling of 127921036 in words is "one hundred twenty-seven million, nine hundred twenty-one thousand, thirty-six".