1052540402 has 4 divisors (see below), whose sum is σ = 1578810606. Its totient is φ = 526270200.

The previous prime is 1052540399. The next prime is 1052540407. The reversal of 1052540402 is 2040452501.

It is a happy number.

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., 633478561 + 419061841 = 25169^2 + 20471^2 .

It is a super-2 number, since 2×1052540402² = 2215682595684643208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1052540407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263135099 + ... + 263135102.

Almost surely, 2^1052540402 is an apocalyptic number.

1052540402 is a deficient number, since it is larger than the sum of its proper divisors (526270204).

1052540402 is an equidigital number, since it uses as much as digits as its factorization.

1052540402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526270203.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1052540402 is about 32442.8790645960. The cubic root of 1052540402 is about 1017.2153967400.

Adding to 1052540402 its reverse (2040452501), we get a palindrome (3092992903).

The spelling of 1052540402 in words is "one billion, fifty-two million, five hundred forty thousand, four hundred two".