1421545340 has 12 divisors (see below), whose sum is σ = 2985245256. Its totient is φ = 568618128.

The previous prime is 1421545327. The next prime is 1421545343. The reversal of 1421545340 is 435451241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421545343) 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, 35538614 + ... + 35538653.

It is an arithmetic number, because the mean of its divisors is an integer number (248770438).

Almost surely, 2^1421545340 is an apocalyptic number.

1421545340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421545340 is an abundant number, since it is smaller than the sum of its proper divisors (1563699916).

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

1421545340 is a wasteful number, since it uses less digits than its factorization.

1421545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71077276 (or 71077274 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1421545340 is about 37703.3863200641. The cubic root of 1421545340 is about 1124.3984510779.

Adding to 1421545340 its reverse (435451241), we get a palindrome (1856996581).

The spelling of 1421545340 in words is "one billion, four hundred twenty-one million, five hundred forty-five thousand, three hundred forty".