1147420420 has 24 divisors (see below), whose sum is σ = 2410219224. Its totient is φ = 458846976.

The previous prime is 1147420369. The next prime is 1147420429. The reversal of 1147420420 is 240247411.

It can be written as a sum of positive squares in 4 ways, for example, as 450882756 + 696537664 = 21234^2 + 26392^2 .

It is not an unprimeable number, because it can be changed into a prime (1147420429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145704 + ... + 153376.

It is an arithmetic number, because the mean of its divisors is an integer number (100425801).

Almost surely, 2^1147420420 is an apocalyptic number.

1147420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147420420 is an abundant number, since it is smaller than the sum of its proper divisors (1262798804).

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

1147420420 is a wasteful number, since it uses less digits than its factorization.

1147420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15159 (or 15157 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 1147420420 is about 33873.5947309995. The cubic root of 1147420420 is about 1046.9056046834.

Adding to 1147420420 its reverse (240247411), we get a palindrome (1387667831).

The spelling of 1147420420 in words is "one billion, one hundred forty-seven million, four hundred twenty thousand, four hundred twenty".