1420624 has 10 divisors (see below), whose sum is σ = 2752490. Its totient is φ = 710304.

The previous prime is 1420621. The next prime is 1420631. The reversal of 1420624 is 4260241.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 28224 = 1180^2 + 168^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44379 + ... + 44410.

It is an arithmetic number, because the mean of its divisors is an integer number (275249).

2^1420624 is an apocalyptic number.

It is an amenable number.

1420624 is a deficient number, since it is larger than the sum of its proper divisors (1331866).

1420624 is an equidigital number, since it uses as much as digits as its factorization.

1420624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88797 (or 88791 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1420624 is about 1191.8993246076. The cubic root of 1420624 is about 112.4155481419.

Adding to 1420624 its reverse (4260241), we get a palindrome (5680865).

The spelling of 1420624 in words is "one million, four hundred twenty thousand, six hundred twenty-four".