1421700345 has 24 divisors (see below), whose sum is σ = 2653841736. Its totient is φ = 699913728.

The previous prime is 1421700323. The next prime is 1421700349. The reversal of 1421700345 is 5430071241.

It can be written as a sum of positive squares in 4 ways, for example, as 143137296 + 1278563049 = 11964^2 + 35757^2 .

It is not a de Polignac number, because 1421700345 - 2⁶ = 1421700281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421700349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1214544 + ... + 1215713.

It is an arithmetic number, because the mean of its divisors is an integer number (110576739).

Almost surely, 2^1421700345 is an apocalyptic number.

1421700345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421700345 is a deficient number, since it is larger than the sum of its proper divisors (1232141391).

1421700345 is a wasteful number, since it uses less digits than its factorization.

1421700345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430281 (or 2430278 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1421700345 is about 37705.4418486245. The cubic root of 1421700345 is about 1124.4393176482.

Adding to 1421700345 its reverse (5430071241), we get a palindrome (6851771586).

The spelling of 1421700345 in words is "one billion, four hundred twenty-one million, seven hundred thousand, three hundred forty-five".