1355420420 has 12 divisors (see below), whose sum is σ = 2846382924. Its totient is φ = 542168160.

The previous prime is 1355420411. The next prime is 1355420431. The reversal of 1355420420 is 240245531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 939912964 + 415507456 = 30658^2 + 20384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1355420420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33885491 + ... + 33885530.

It is an arithmetic number, because the mean of its divisors is an integer number (237198577).

Almost surely, 2^1355420420 is an apocalyptic number.

1355420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355420420 is an abundant number, since it is smaller than the sum of its proper divisors (1490962504).

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

1355420420 is a wasteful number, since it uses less digits than its factorization.

1355420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67771030 (or 67771028 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1355420420 is about 36816.0348218001. The cubic root of 1355420420 is about 1106.6866593298.

Adding to 1355420420 its reverse (240245531), we get a palindrome (1595665951).

The spelling of 1355420420 in words is "one billion, three hundred fifty-five million, four hundred twenty thousand, four hundred twenty".