1254420520 has 64 divisors (see below), whose sum is σ = 2948400000. Its totient is φ = 479716608.

The previous prime is 1254420481. The next prime is 1254420521. The reversal of 1254420520 is 250244521.

It is not an unprimeable number, because it can be changed into a prime (1254420521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114231 + ... + 124729.

It is an arithmetic number, because the mean of its divisors is an integer number (46068750).

Almost surely, 2^1254420520 is an apocalyptic number.

1254420520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1254420520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474200000).

1254420520 is an abundant number, since it is smaller than the sum of its proper divisors (1693979480).

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

1254420520 is a wasteful number, since it uses less digits than its factorization.

1254420520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1254420520 is about 35417.7994799225. The cubic root of 1254420520 is about 1078.4856806195.

The spelling of 1254420520 in words is "one billion, two hundred fifty-four million, four hundred twenty thousand, five hundred twenty".