1077921 has 32 divisors (see below), whose sum is σ = 1787520. Its totient is φ = 637632.

The previous prime is 1077917. The next prime is 1077943. The reversal of 1077921 is 1297701.

It is not a de Polignac number, because 1077921 - 2² = 1077917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1077911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12946 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2^1077921 is an apocalyptic number.

It is an amenable number.

1077921 is a deficient number, since it is larger than the sum of its proper divisors (709599).

1077921 is a wasteful number, since it uses less digits than its factorization.

1077921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 1077921 is about 1038.2297433613. The cubic root of 1077921 is about 102.5326804379.

The spelling of 1077921 in words is "one million, seventy-seven thousand, nine hundred twenty-one".