1020542402 has 32 divisors (see below), whose sum is σ = 1861289280. Its totient is φ = 413614080.

The previous prime is 1020542377. The next prime is 1020542483. The reversal of 1020542402 is 2042450201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64703 + ... + 78914.

It is an arithmetic number, because the mean of its divisors is an integer number (58165290).

Almost surely, 2^1020542402 is an apocalyptic number.

1020542402 is a deficient number, since it is larger than the sum of its proper divisors (840746878).

1020542402 is a wasteful number, since it uses less digits than its factorization.

1020542402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143666.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1020542402 is about 31945.9293494492. The cubic root of 1020542402 is about 1006.8011074095.

Adding to 1020542402 its reverse (2042450201), we get a palindrome (3062992603).

The spelling of 1020542402 in words is "one billion, twenty million, five hundred forty-two thousand, four hundred two".