1451242420 has 24 divisors (see below), whose sum is σ = 3208010400. Its totient is φ = 549944352.

The previous prime is 1451242381. The next prime is 1451242421. The reversal of 1451242420 is 242421541.

It is a super-4 number, since 4×1451242420⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451242421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909150 + ... + 1909909.

It is an arithmetic number, because the mean of its divisors is an integer number (133667100).

Almost surely, 2^1451242420 is an apocalyptic number.

1451242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451242420 is an abundant number, since it is smaller than the sum of its proper divisors (1756767980).

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

1451242420 is a wasteful number, since it uses less digits than its factorization.

1451242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819087 (or 3819085 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1451242420 is about 38095.1758100681. The cubic root of 1451242420 is about 1132.1743759892.

Adding to 1451242420 its reverse (242421541), we get a palindrome (1693663961).

The spelling of 1451242420 in words is "one billion, four hundred fifty-one million, two hundred forty-two thousand, four hundred twenty".