120021340 has 48 divisors (see below), whose sum is σ = 263340000. Its totient is φ = 45902592.

The previous prime is 120021323. The next prime is 120021359. The reversal of 120021340 is 43120021.

120021340 = T₄₆₄ + T₄₆₅ + ... + T₉₃₅.

It is a self number, because there is not a number n which added to its sum of digits gives 120021340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42286 + ... + 45034.

It is an arithmetic number, because the mean of its divisors is an integer number (5486250).

Almost surely, 2^120021340 is an apocalyptic number.

120021340 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 120021340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131670000).

120021340 is an abundant number, since it is smaller than the sum of its proper divisors (143318660).

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

120021340 is a wasteful number, since it uses less digits than its factorization.

120021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120021340 is about 10955.4251400847. The cubic root of 120021340 is about 493.2716514473.

Adding to 120021340 its reverse (43120021), we get a palindrome (163141361).

The spelling of 120021340 in words is "one hundred twenty million, twenty-one thousand, three hundred forty".