1421070156 has 60 divisors (see below), whose sum is σ = 4052691720. Its totient is φ = 430626240.

The previous prime is 1421070139. The next prime is 1421070191. The reversal of 1421070156 is 6510701241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 195801 + ... + 202928.

It is an arithmetic number, because the mean of its divisors is an integer number (67544862).

Almost surely, 2^1421070156 is an apocalyptic number.

It is an amenable number.

1421070156 is an abundant number, since it is smaller than the sum of its proper divisors (2631621564).

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

1421070156 is a wasteful number, since it uses less digits than its factorization.

1421070156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398756 (or 398745 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1421070156 is about 37697.0841843239. The cubic root of 1421070156 is about 1124.2731518271.

Adding to 1421070156 its reverse (6510701241), we get a palindrome (7931771397).

The spelling of 1421070156 in words is "one billion, four hundred twenty-one million, seventy thousand, one hundred fifty-six".