1522442420 has 12 divisors (see below), whose sum is σ = 3197129124. Its totient is φ = 608976960.

The previous prime is 1522442399. The next prime is 1522442423. The reversal of 1522442420 is 242442251.

It can be written as a sum of positive squares in 2 ways, for example, as 860718244 + 661724176 = 29338^2 + 25724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1522442420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1522442423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38061041 + ... + 38061080.

It is an arithmetic number, because the mean of its divisors is an integer number (266427427).

Almost surely, 2^1522442420 is an apocalyptic number.

1522442420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1522442420 is an abundant number, since it is smaller than the sum of its proper divisors (1674686704).

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

1522442420 is a wasteful number, since it uses less digits than its factorization.

1522442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76122130 (or 76122128 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1522442420 is about 39018.4881818863. The cubic root of 1522442420 is about 1150.3949292615.

Adding to 1522442420 its reverse (242442251), we get a palindrome (1764884671).

The spelling of 1522442420 in words is "one billion, five hundred twenty-two million, four hundred forty-two thousand, four hundred twenty".