1220042010 has 128 divisors (see below), whose sum is σ = 3299180544. Its totient is φ = 286191360.

The previous prime is 1220041997. The next prime is 1220042023. The reversal of 1220042010 is 102400221.

It is an interprime number because it is at equal distance from previous prime (1220041997) and next prime (1220042023).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1801792 + ... + 1802468.

It is an arithmetic number, because the mean of its divisors is an integer number (25774848).

Almost surely, 2^1220042010 is an apocalyptic number.

1220042010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220042010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649590272).

1220042010 is an abundant number, since it is smaller than the sum of its proper divisors (2079138534).

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

1220042010 is a wasteful number, since it uses less digits than its factorization.

1220042010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220042010 is about 34929.0997593697. The cubic root of 1220042010 is about 1068.5419947442.

Adding to 1220042010 its reverse (102400221), we get a palindrome (1322442231).

The spelling of 1220042010 in words is "one billion, two hundred twenty million, forty-two thousand, ten".