1420165100 has 18 divisors (see below), whose sum is σ = 3081758484. Its totient is φ = 568066000.

The previous prime is 1420165081. The next prime is 1420165139. The reversal of 1420165100 is 15610241.

It is a super-2 number, since 2×1420165100² = 4033737822516020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7100726 + ... + 7100925.

Almost surely, 2^1420165100 is an apocalyptic number.

1420165100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420165100 is an abundant number, since it is smaller than the sum of its proper divisors (1661593384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420165100 is a wasteful number, since it uses less digits than its factorization.

1420165100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14201665 (or 14201658 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1420165100 is about 37685.0779487054. The cubic root of 1420165100 is about 1124.0344241683.

Adding to 1420165100 its reverse (15610241), we get a palindrome (1435775341).

The spelling of 1420165100 in words is "one billion, four hundred twenty million, one hundred sixty-five thousand, one hundred".