1421952436 has 6 divisors (see below), whose sum is σ = 2488416770. Its totient is φ = 710976216.

The previous prime is 1421952401. The next prime is 1421952443. The reversal of 1421952436 is 6342591241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1413308836 + 8643600 = 37594^2 + 2940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1421952395 and 1421952404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177744051 + ... + 177744058.

Almost surely, 2^1421952436 is an apocalyptic number.

It is an amenable number.

1421952436 is a deficient number, since it is larger than the sum of its proper divisors (1066464334).

1421952436 is a wasteful number, since it uses less digits than its factorization.

1421952436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355488113 (or 355488111 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 1421952436 is about 37708.7845998781. The cubic root of 1421952436 is about 1124.5057742871.

The spelling of 1421952436 in words is "one billion, four hundred twenty-one million, nine hundred fifty-two thousand, four hundred thirty-six".