1021672 has 8 divisors (see below), whose sum is σ = 1915650. Its totient is φ = 510832.

The previous prime is 1021663. The next prime is 1021673. The reversal of 1021672 is 2761201.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 111556 = 954^2 + 334^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1021673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63847 + ... + 63862.

2^1021672 is an apocalyptic number.

It is an amenable number.

1021672 is a deficient number, since it is larger than the sum of its proper divisors (893978).

1021672 is a wasteful number, since it uses less digits than its factorization.

1021672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127715 (or 127711 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1021672 is about 1010.7779182392. Note that the first 3 decimals coincide. The cubic root of 1021672 is about 100.7172433209.

Adding to 1021672 its reverse (2761201), we get a palindrome (3782873).

The spelling of 1021672 in words is "one million, twenty-one thousand, six hundred seventy-two".