1421551241 has 8 divisors (see below), whose sum is σ = 1551298944. Its totient is φ = 1291889520.

The previous prime is 1421551231. The next prime is 1421551247.

It is a happy number.

1421551241 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421551241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421551241.

It is not an unprimeable number, because it can be changed into a prime (1421551247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15920 + ... + 55646.

It is an arithmetic number, because the mean of its divisors is an integer number (193912368).

Almost surely, 2^1421551241 is an apocalyptic number.

1421551241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1421551241 is a deficient number, since it is larger than the sum of its proper divisors (129747703).

1421551241 is a wasteful number, since it uses less digits than its factorization.

1421551241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42991.

The product of its digits is 1600, while the sum is 26.

The square root of 1421551241 is about 37703.4645755533. The cubic root of 1421551241 is about 1124.4000069120.

It can be divided in two parts, 14215 and 51241, that added together give a palindrome (65456).

The spelling of 1421551241 in words is "one billion, four hundred twenty-one million, five hundred fifty-one thousand, two hundred forty-one".