1421675545 has 4 divisors (see below), whose sum is σ = 1706010660. Its totient is φ = 1137340432.

The previous prime is 1421675537. The next prime is 1421675557. The reversal of 1421675545 is 5455761241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5455761241 = 7 ⋅779394463.

It can be written as a sum of positive squares in 2 ways, for example, as 235837449 + 1185838096 = 15357^2 + 34436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421675545 - 2³ = 1421675537 is a prime.

It is a super-2 number, since 2×1421675545² = 4042322710502094050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1421675498 and 1421675507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142167550 + ... + 142167559.

It is an arithmetic number, because the mean of its divisors is an integer number (426502665).

Almost surely, 2^1421675545 is an apocalyptic number.

It is an amenable number.

1421675545 is a deficient number, since it is larger than the sum of its proper divisors (284335115).

1421675545 is an equidigital number, since it uses as much as digits as its factorization.

1421675545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284335114.

The product of its digits is 168000, while the sum is 40.

The square root of 1421675545 is about 37705.1129821938. The cubic root of 1421675545 is about 1124.4327794075.

The spelling of 1421675545 in words is "one billion, four hundred twenty-one million, six hundred seventy-five thousand, five hundred forty-five".