1540054315402 has 8 divisors (see below), whose sum is σ = 2317368797316. Its totient is φ = 767598049632.

The previous prime is 1540054315379. The next prime is 1540054315427. The reversal of 1540054315402 is 2045134500451.

It can be written as a sum of positive squares in 2 ways, for example, as 1413247817601 + 126806497801 = 1188801^2 + 356099^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214553243 + ... + 1214554510.

Almost surely, 2^{1540054315402} is an apocalyptic number.

1540054315402 is a deficient number, since it is larger than the sum of its proper divisors (777314481914).

1540054315402 is a wasteful number, since it uses less digits than its factorization.

1540054315402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429108072.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 1540054315402 its reverse (2045134500451), we get a palindrome (3585188815853).

The spelling of 1540054315402 in words is "one trillion, five hundred forty billion, fifty-four million, three hundred fifteen thousand, four hundred two".