1376772121 has 8 divisors (see below), whose sum is σ = 1388035584. Its totient is φ = 1365551280.

The previous prime is 1376772083. The next prime is 1376772143. The reversal of 1376772121 is 1212776731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1376772121 - 2⁷ = 1376771993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376772821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55891 + ... + 76663.

It is an arithmetic number, because the mean of its divisors is an integer number (173504448).

Almost surely, 2^1376772121 is an apocalyptic number.

It is an amenable number.

1376772121 is a deficient number, since it is larger than the sum of its proper divisors (11263463).

1376772121 is a wasteful number, since it uses less digits than its factorization.

1376772121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21311.

The product of its digits is 24696, while the sum is 37.

The square root of 1376772121 is about 37104.8800159763. The cubic root of 1376772121 is about 1112.4675567865.

The spelling of 1376772121 in words is "one billion, three hundred seventy-six million, seven hundred seventy-two thousand, one hundred twenty-one".