1529135402 has 4 divisors (see below), whose sum is σ = 2293703106. Its totient is φ = 764567700.

The previous prime is 1529135401. The next prime is 1529135411. The reversal of 1529135402 is 2045319251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2045319251 = 67 ⋅30527153.

It can be written as a sum of positive squares in only one way, i.e., 1504741681 + 24393721 = 38791^2 + 4939^2 .

It is not an unprimeable number, because it can be changed into a prime (1529135401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382283849 + ... + 382283852.

Almost surely, 2^1529135402 is an apocalyptic number.

1529135402 is a deficient number, since it is larger than the sum of its proper divisors (764567704).

1529135402 is an equidigital number, since it uses as much as digits as its factorization.

1529135402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764567703.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1529135402 is about 39104.1609294970. The cubic root of 1529135402 is about 1152.0782588336.

The spelling of 1529135402 in words is "one billion, five hundred twenty-nine million, one hundred thirty-five thousand, four hundred two".