127205042 has 16 divisors (see below), whose sum is σ = 203962752. Its totient is φ = 59352480.

The previous prime is 127205027. The next prime is 127205081. The reversal of 127205042 is 240502721.

It is a happy number.

It is a super-2 number, since 2×127205042² = 32362245420443528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 127204999 and 127205017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31838 + ... + 35609.

It is an arithmetic number, because the mean of its divisors is an integer number (12747672).

Almost surely, 2^127205042 is an apocalyptic number.

127205042 is a deficient number, since it is larger than the sum of its proper divisors (76757710).

127205042 is a wasteful number, since it uses less digits than its factorization.

127205042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67513.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 127205042 is about 11278.5212683224. The cubic root of 127205042 is about 502.9229355986.

Adding to 127205042 its reverse (240502721), we get a palindrome (367707763).

The spelling of 127205042 in words is "one hundred twenty-seven million, two hundred five thousand, forty-two".