1421758145 has 8 divisors (see below), whose sum is σ = 1706355456. Its totient is φ = 1137242736.

The previous prime is 1421758141. The next prime is 1421758183. The reversal of 1421758145 is 5418571241.

1421758145 = T₂₃₈₄₅ + T₂₃₈₄₆ + ... + T₂₃₈₄₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421758145 - 2² = 1421758141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421758099 and 1421758108.

It is not an unprimeable number, because it can be changed into a prime (1421758141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28274 + ... + 60356.

It is an arithmetic number, because the mean of its divisors is an integer number (213294432).

Almost surely, 2^1421758145 is an apocalyptic number.

It is an amenable number.

1421758145 is a deficient number, since it is larger than the sum of its proper divisors (284597311).

1421758145 is an equidigital number, since it uses as much as digits as its factorization.

1421758145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40951.

The product of its digits is 44800, while the sum is 38.

The square root of 1421758145 is about 37706.2083084470. The cubic root of 1421758145 is about 1124.4545556721.

The spelling of 1421758145 in words is "one billion, four hundred twenty-one million, seven hundred fifty-eight thousand, one hundred forty-five".