1421202340 has 12 divisors (see below), whose sum is σ = 2984524956. Its totient is φ = 568480928.

The previous prime is 1421202317. The next prime is 1421202371. The reversal of 1421202340 is 432021241.

It can be written as a sum of positive squares in 2 ways, for example, as 405377956 + 1015824384 = 20134^2 + 31872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35530039 + ... + 35530078.

It is an arithmetic number, because the mean of its divisors is an integer number (248710413).

Almost surely, 2^1421202340 is an apocalyptic number.

1421202340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421202340 is an abundant number, since it is smaller than the sum of its proper divisors (1563322616).

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

1421202340 is a wasteful number, since it uses less digits than its factorization.

1421202340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71060126 (or 71060124 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1421202340 is about 37698.8373826037. The cubic root of 1421202340 is about 1124.3080096686.

Adding to 1421202340 its reverse (432021241), we get a palindrome (1853223581).

The spelling of 1421202340 in words is "one billion, four hundred twenty-one million, two hundred two thousand, three hundred forty".