1402220505 has 24 divisors (see below), whose sum is σ = 2609848512. Its totient is φ = 641014752.

The previous prime is 1402220483. The next prime is 1402220549. The reversal of 1402220505 is 5050222041.

It is a happy number.

It is not a de Polignac number, because 1402220505 - 2⁸ = 1402220249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953157 + ... + 954626.

It is an arithmetic number, because the mean of its divisors is an integer number (108743688).

Almost surely, 2^1402220505 is an apocalyptic number.

1402220505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1402220505 is a deficient number, since it is larger than the sum of its proper divisors (1207628007).

1402220505 is a wasteful number, since it uses less digits than its factorization.

1402220505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907805 (or 1907798 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1402220505 is about 37446.2348574593. The cubic root of 1402220505 is about 1119.2800711877.

Adding to 1402220505 its reverse (5050222041), we get a palindrome (6452442546).

The spelling of 1402220505 in words is "one billion, four hundred two million, two hundred twenty thousand, five hundred five".