1402215420 has 48 divisors (see below), whose sum is σ = 4157159328. Its totient is φ = 351928320.

The previous prime is 1402215391. The next prime is 1402215431. The reversal of 1402215420 is 245122041.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 686341 + ... + 688380.

It is an arithmetic number, because the mean of its divisors is an integer number (86607486).

Almost surely, 2^1402215420 is an apocalyptic number.

1402215420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402215420 is an abundant number, since it is smaller than the sum of its proper divisors (2754943908).

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

1402215420 is a wasteful number, since it uses less digits than its factorization.

1402215420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374750 (or 1374748 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1402215420 is about 37446.1669600508. The cubic root of 1402215420 is about 1119.2787182036.

Adding to 1402215420 its reverse (245122041), we get a palindrome (1647337461).

The spelling of 1402215420 in words is "one billion, four hundred two million, two hundred fifteen thousand, four hundred twenty".