1451421439 has 4 divisors (see below), whose sum is σ = 1563069256. Its totient is φ = 1339773624.

The previous prime is 1451421421. The next prime is 1451421449. The reversal of 1451421439 is 9341241541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9341241541 = 127 ⋅73553083.

It is a cyclic number.

It is not a de Polignac number, because 1451421439 - 2¹⁵ = 1451388671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451421449) 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, 55823889 + ... + 55823914.

It is an arithmetic number, because the mean of its divisors is an integer number (390767314).

Almost surely, 2^1451421439 is an apocalyptic number.

1451421439 is a deficient number, since it is larger than the sum of its proper divisors (111647817).

1451421439 is a wasteful number, since it uses less digits than its factorization.

1451421439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111647816.

The product of its digits is 17280, while the sum is 34.

The square root of 1451421439 is about 38097.5253658292. The cubic root of 1451421439 is about 1132.2209274562.

It can be divided in two parts, 14514 and 21439, that added together give a palindrome (35953).

The spelling of 1451421439 in words is "one billion, four hundred fifty-one million, four hundred twenty-one thousand, four hundred thirty-nine".