1420213545 has 24 divisors (see below), whose sum is σ = 2568735936. Its totient is φ = 724514208.

The previous prime is 1420213537. The next prime is 1420213547. The reversal of 1420213545 is 5453120241.

It is not a de Polignac number, because 1420213545 - 2³ = 1420213537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420213547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 685059 + ... + 687128.

It is an arithmetic number, because the mean of its divisors is an integer number (107030664).

Almost surely, 2^1420213545 is an apocalyptic number.

1420213545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420213545 is a deficient number, since it is larger than the sum of its proper divisors (1148522391).

1420213545 is a wasteful number, since it uses less digits than its factorization.

1420213545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372221 (or 1372218 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1420213545 is about 37685.7207042668. The cubic root of 1420213545 is about 1124.0472051303.

Adding to 1420213545 its reverse (5453120241), we get a palindrome (6873333786).

The spelling of 1420213545 in words is "one billion, four hundred twenty million, two hundred thirteen thousand, five hundred forty-five".