1420065 has 32 divisors (see below), whose sum is σ = 2578560. Its totient is φ = 741312.

The previous prime is 1420063. The next prime is 1420073. The reversal of 1420065 is 5600241.

It is a happy number.

It is not a de Polignac number, because 1420065 - 2¹ = 1420063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8967 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (80580).

2^1420065 is an apocalyptic number.

1420065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420065 is a deficient number, since it is larger than the sum of its proper divisors (1158495).

1420065 is a wasteful number, since it uses less digits than its factorization.

1420065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1420065 is about 1191.6648018633. The cubic root of 1420065 is about 112.4008014448.

The spelling of 1420065 in words is "one million, four hundred twenty thousand, sixty-five".