1421025 has 12 divisors (see below), whose sum is σ = 2349552. Its totient is φ = 757840.

The previous prime is 1421011. The next prime is 1421027. The reversal of 1421025 is 5201241.

It is not a de Polignac number, because 1421025 - 2¹³ = 1412833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1420995 and 1421013.

It is not an unprimeable number, because it can be changed into a prime (1421027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9399 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (195796).

2^1421025 is an apocalyptic number.

1421025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421025 is a deficient number, since it is larger than the sum of its proper divisors (928527).

1421025 is a wasteful number, since it uses less digits than its factorization.

1421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18960 (or 18955 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1421025 is about 1192.0675316441. The cubic root of 1421025 is about 112.4261243380.

Adding to 1421025 its reverse (5201241), we get a palindrome (6622266).

The spelling of 1421025 in words is "one million, four hundred twenty-one thousand, twenty-five".