1420433724 has 48 divisors (see below), whose sum is σ = 3465584640. Its totient is φ = 451957440.

The previous prime is 1420433723. The next prime is 1420433731. The reversal of 1420433724 is 4273340241.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1420433691 and 1420433700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420433723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135429 + ... + 145539.

It is an arithmetic number, because the mean of its divisors is an integer number (72199680).

Almost surely, 2^1420433724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420433724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732792320).

1420433724 is an abundant number, since it is smaller than the sum of its proper divisors (2045150916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420433724 is a wasteful number, since it uses less digits than its factorization.

1420433724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650 (or 10648 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 1420433724 is about 37688.6418433989. The cubic root of 1420433724 is about 1124.1052900105.

Adding to 1420433724 its reverse (4273340241), we get a palindrome (5693773965).

The spelling of 1420433724 in words is "one billion, four hundred twenty million, four hundred thirty-three thousand, seven hundred twenty-four".