1406242321 has 4 divisors (see below), whose sum is σ = 1534082544. Its totient is φ = 1278402100.

The previous prime is 1406242267. The next prime is 1406242339. The reversal of 1406242321 is 1232426041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1406242321 - 2¹³ = 1406234129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406242921) 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, 63920095 + ... + 63920116.

It is an arithmetic number, because the mean of its divisors is an integer number (383520636).

Almost surely, 2^1406242321 is an apocalyptic number.

1406242321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1406242321 is a deficient number, since it is larger than the sum of its proper divisors (127840223).

1406242321 is a wasteful number, since it uses less digits than its factorization.

1406242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127840222.

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

The square root of 1406242321 is about 37499.8976131936. The cubic root of 1406242321 is about 1120.3491473641.

Adding to 1406242321 its reverse (1232426041), we get a palindrome (2638668362).

The spelling of 1406242321 in words is "one billion, four hundred six million, two hundred forty-two thousand, three hundred twenty-one".