1402223420 has 72 divisors (see below), whose sum is σ = 3232854576. Its totient is φ = 510561792.

The previous prime is 1402223413. The next prime is 1402223423. The reversal of 1402223420 is 243222041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1402223392 and 1402223401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402223423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243899 + ... + 249581.

It is an arithmetic number, because the mean of its divisors is an integer number (44900758).

Almost surely, 2^1402223420 is an apocalyptic number.

1402223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616427288).

1402223420 is an abundant number, since it is smaller than the sum of its proper divisors (1830631156).

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

1402223420 is a wasteful number, since it uses less digits than its factorization.

1402223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791 (or 5776 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1402223420 is about 37446.2737799103. The cubic root of 1402223420 is about 1119.2808467907.

Adding to 1402223420 its reverse (243222041), we get a palindrome (1645445461).

The spelling of 1402223420 in words is "one billion, four hundred two million, two hundred twenty-three thousand, four hundred twenty".