1421951343 has 4 divisors (see below), whose sum is σ = 1895935128. Its totient is φ = 947967560.

The previous prime is 1421951339. The next prime is 1421951347. The reversal of 1421951343 is 3431591241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1421951339) and next prime (1421951347).

It is a cyclic number.

It is not a de Polignac number, because 1421951343 - 2² = 1421951339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421951347) 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, 236991888 + ... + 236991893.

It is an arithmetic number, because the mean of its divisors is an integer number (473983782).

Almost surely, 2^1421951343 is an apocalyptic number.

1421951343 is a deficient number, since it is larger than the sum of its proper divisors (473983785).

1421951343 is an equidigital number, since it uses as much as digits as its factorization.

1421951343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473983784.

The product of its digits is 12960, while the sum is 33.

The square root of 1421951343 is about 37708.7701072310. The cubic root of 1421951343 is about 1124.5054861656.

The spelling of 1421951343 in words is "one billion, four hundred twenty-one million, nine hundred fifty-one thousand, three hundred forty-three".