1420053661 has 8 divisors (see below), whose sum is σ = 1536028704. Its totient is φ = 1305041520.

The previous prime is 1420053659. The next prime is 1420053671. The reversal of 1420053661 is 1663500241.

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 1420053661 - 2¹ = 1420053659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420053601) 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, 237655 + ... + 243556.

It is an arithmetic number, because the mean of its divisors is an integer number (192003588).

Almost surely, 2^1420053661 is an apocalyptic number.

It is an amenable number.

1420053661 is a deficient number, since it is larger than the sum of its proper divisors (115975043).

1420053661 is a wasteful number, since it uses less digits than its factorization.

1420053661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481451.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1420053661 is about 37683.5993636489. The cubic root of 1420053661 is about 1124.0050227631.

The spelling of 1420053661 in words is "one billion, four hundred twenty million, fifty-three thousand, six hundred sixty-one".