1402212420 has 108 divisors (see below), whose sum is σ = 4947837804. Its totient is φ = 320503680.

The previous prime is 1402212419. The next prime is 1402212443. The reversal of 1402212420 is 242122041.

1402212420 is a `hidden beast` number, since 1 + 402 + 21 + 242 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 457018884 + 945193536 = 21378^2 + 30744^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1402212393 and 1402212402.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70671 + ... + 88310.

It is an arithmetic number, because the mean of its divisors is an integer number (45813313).

Almost surely, 2^1402212420 is an apocalyptic number.

1402212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402212420 is an abundant number, since it is smaller than the sum of its proper divisors (3545625384).

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

1402212420 is a wasteful number, since it uses less digits than its factorization.

1402212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159010 (or 158998 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1402212420 is about 37446.1269025249. The cubic root of 1402212420 is about 1119.2779199814.

Adding to 1402212420 its reverse (242122041), we get a palindrome (1644334461).

The spelling of 1402212420 in words is "one billion, four hundred two million, two hundred twelve thousand, four hundred twenty".