1420637 has 4 divisors (see below), whose sum is σ = 1466496. Its totient is φ = 1374780.

The previous prime is 1420633. The next prime is 1420651. The reversal of 1420637 is 7360241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1420637 - 2² = 1420633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420631) 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 3 ways as a sum of consecutive naturals, for example, 22883 + ... + 22944.

It is an arithmetic number, because the mean of its divisors is an integer number (366624).

2^1420637 is an apocalyptic number.

It is an amenable number.

1420637 is a deficient number, since it is larger than the sum of its proper divisors (45859).

1420637 is an equidigital number, since it uses as much as digits as its factorization.

1420637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45858.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1420637 is about 1191.9047780758. The cubic root of 1420637 is about 112.4158910423.

Adding to 1420637 its reverse (7360241), we get a palindrome (8780878).

The spelling of 1420637 in words is "one million, four hundred twenty thousand, six hundred thirty-seven".