1547402002 has 4 divisors (see below), whose sum is σ = 2321103006. Its totient is φ = 773701000.

The previous prime is 1547401969. The next prime is 1547402069. The reversal of 1547402002 is 2002047451.

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

It can be written as a sum of positive squares in only one way, i.e., 1043354601 + 504047401 = 32301^2 + 22451^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386850499 + ... + 386850502.

Almost surely, 2^1547402002 is an apocalyptic number.

1547402002 is a deficient number, since it is larger than the sum of its proper divisors (773701004).

1547402002 is an equidigital number, since it uses as much as digits as its factorization.

1547402002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773701003.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1547402002 is about 39337.0309250711. The cubic root of 1547402002 is about 1156.6475745155.

Adding to 1547402002 its reverse (2002047451), we get a palindrome (3549449453).

The spelling of 1547402002 in words is "one billion, five hundred forty-seven million, four hundred two thousand, two".