1254445420 has 12 divisors (see below), whose sum is σ = 2634335424. Its totient is φ = 501778160.

The previous prime is 1254445403. The next prime is 1254445427. The reversal of 1254445420 is 245444521.

It is not an unprimeable number, because it can be changed into a prime (1254445427) 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, 31361116 + ... + 31361155.

It is an arithmetic number, because the mean of its divisors is an integer number (219527952).

Almost surely, 2^1254445420 is an apocalyptic number.

1254445420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254445420 is an abundant number, since it is smaller than the sum of its proper divisors (1379890004).

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

1254445420 is a wasteful number, since it uses less digits than its factorization.

1254445420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62722280 (or 62722278 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 1254445420 is about 35418.1509963465. The cubic root of 1254445420 is about 1078.4928164817.

Adding to 1254445420 its reverse (245444521), we get a palindrome (1499889941).

The spelling of 1254445420 in words is "one billion, two hundred fifty-four million, four hundred forty-five thousand, four hundred twenty".