1621424302 has 8 divisors (see below), whose sum is σ = 2466392112. Its totient is φ = 799293600.

The previous prime is 1621424293. The next prime is 1621424309. The reversal of 1621424302 is 2034241261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621424309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5709099 + ... + 5709382.

It is an arithmetic number, because the mean of its divisors is an integer number (308299014).

Almost surely, 2^1621424302 is an apocalyptic number.

1621424302 is a deficient number, since it is larger than the sum of its proper divisors (844967810).

1621424302 is a wasteful number, since it uses less digits than its factorization.

1621424302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11418554.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1621424302 is about 40266.9132415188. The cubic root of 1621424302 is about 1174.8043862077.

Adding to 1621424302 its reverse (2034241261), we get a palindrome (3655665563).

It can be divided in two parts, 16214 and 24302, that multiplied together give a triangular number (394032628 = T₂₈₀₇₂).

The spelling of 1621424302 in words is "one billion, six hundred twenty-one million, four hundred twenty-four thousand, three hundred two".