1021230156 has 48 divisors (see below), whose sum is σ = 2435417600. Its totient is φ = 332983872.

The previous prime is 1021230139. The next prime is 1021230209. The reversal of 1021230156 is 6510321201.

It is a super-2 number, since 2×1021230156² = 2085822063047568672, which contains 22 as substring.

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, 98391 + ... + 108273.

Almost surely, 2^1021230156 is an apocalyptic number.

It is an amenable number.

1021230156 is an abundant number, since it is smaller than the sum of its proper divisors (1414187444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021230156 is a wasteful number, since it uses less digits than its factorization.

1021230156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078 (or 10076 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1021230156 is about 31956.6918813572. The cubic root of 1021230156 is about 1007.0272211571.

Adding to 1021230156 its reverse (6510321201), we get a palindrome (7531551357).

The spelling of 1021230156 in words is "one billion, twenty-one million, two hundred thirty thousand, one hundred fifty-six".