1202135145 has 16 divisors (see below), whose sum is σ = 1942092672. Its totient is φ = 634913280.

The previous prime is 1202135131. The next prime is 1202135171. The reversal of 1202135145 is 5415312021.

It is a happy number.

It is not a de Polignac number, because 1202135145 - 2¹³ = 1202126953 is a prime.

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, 387496 + ... + 390585.

It is an arithmetic number, because the mean of its divisors is an integer number (121380792).

Almost surely, 2^1202135145 is an apocalyptic number.

1202135145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1202135145 is a deficient number, since it is larger than the sum of its proper divisors (739957527).

1202135145 is a wasteful number, since it uses less digits than its factorization.

1202135145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778192.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1202135145 is about 34671.8206184792. The cubic root of 1202135145 is about 1063.2884541177.

Adding to 1202135145 its reverse (5415312021), we get a palindrome (6617447166).

The spelling of 1202135145 in words is "one billion, two hundred two million, one hundred thirty-five thousand, one hundred forty-five".