1455404642 has 4 divisors (see below), whose sum is σ = 2183106966. Its totient is φ = 727702320.

The previous prime is 1455404627. The next prime is 1455404651. The reversal of 1455404642 is 2464045541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2464045541 = 107 ⋅23028463.

It can be written as a sum of positive squares in only one way, i.e., 908359321 + 547045321 = 30139^2 + 23389^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363851159 + ... + 363851162.

Almost surely, 2^1455404642 is an apocalyptic number.

1455404642 is a deficient number, since it is larger than the sum of its proper divisors (727702324).

1455404642 is an equidigital number, since it uses as much as digits as its factorization.

1455404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727702323.

The product of its (nonzero) digits is 76800, while the sum is 35.

The square root of 1455404642 is about 38149.7659494786. The cubic root of 1455404642 is about 1133.2557168491.

The spelling of 1455404642 in words is "one billion, four hundred fifty-five million, four hundred four thousand, six hundred forty-two".