1420322040 has 320 divisors, whose sum is σ = 5018112000. Its totient is φ = 359873280.

The previous prime is 1420322021. The next prime is 1420322051. The reversal of 1420322040 is 402230241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7934671 + ... + 7934849.

It is an arithmetic number, because the mean of its divisors is an integer number (15681600).

Almost surely, 2^1420322040 is an apocalyptic number.

1420322040 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 1420322040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2509056000).

1420322040 is an abundant number, since it is smaller than the sum of its proper divisors (3597789960).

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

1420322040 is a wasteful number, since it uses less digits than its factorization.

1420322040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1420322040 is about 37687.1601477214. The cubic root of 1420322040 is about 1124.0758276795.

Adding to 1420322040 its reverse (402230241), we get a palindrome (1822552281).

The spelling of 1420322040 in words is "one billion, four hundred twenty million, three hundred twenty-two thousand, forty".