1254520421 has 8 divisors (see below), whose sum is σ = 1564077504. Its totient is φ = 977548320.

The previous prime is 1254520417. The next prime is 1254520427. The reversal of 1254520421 is 1240254521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1254520421 - 2² = 1254520417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254520427) 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, 8146160 + ... + 8146313.

It is an arithmetic number, because the mean of its divisors is an integer number (195509688).

Almost surely, 2^1254520421 is an apocalyptic number.

1254520421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1254520421 is a deficient number, since it is larger than the sum of its proper divisors (309557083).

1254520421 is a wasteful number, since it uses less digits than its factorization.

1254520421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16292491.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1254520421 is about 35419.2097737937. The cubic root of 1254520421 is about 1078.5143097584.

Adding to 1254520421 its reverse (1240254521), we get a palindrome (2494774942).

The spelling of 1254520421 in words is "one billion, two hundred fifty-four million, five hundred twenty thousand, four hundred twenty-one".