1402540542538 has 8 divisors (see below), whose sum is σ = 2109057226020. Its totient is φ = 699521467200.

The previous prime is 1402540542527. The next prime is 1402540542563. The reversal of 1402540542538 is 8352450452041.

It can be written as a sum of positive squares in 2 ways, for example, as 1299182793489 + 103357749049 = 1139817^2 + 321493^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1402540542494 and 1402540542503.

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, 874401033 + ... + 874402636.

Almost surely, 2^{1402540542538} is an apocalyptic number.

1402540542538 is a deficient number, since it is larger than the sum of its proper divisors (706516683482).

1402540542538 is a wasteful number, since it uses less digits than its factorization.

1402540542538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748804072.

The product of its (nonzero) digits is 768000, while the sum is 43.

Adding to 1402540542538 its reverse (8352450452041), we get a palindrome (9754990994579).

The spelling of 1402540542538 in words is "one trillion, four hundred two billion, five hundred forty million, five hundred forty-two thousand, five hundred thirty-eight".