1020157270 has 16 divisors (see below), whose sum is σ = 2003218128. Its totient is φ = 370966240.

The previous prime is 1020157223. The next prime is 1020157289. The reversal of 1020157270 is 727510201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4636969 + ... + 4637188.

It is an arithmetic number, because the mean of its divisors is an integer number (125201133).

Almost surely, 2^1020157270 is an apocalyptic number.

1020157270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020157270 is a deficient number, since it is larger than the sum of its proper divisors (983060858).

1020157270 is a wasteful number, since it uses less digits than its factorization.

1020157270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9274175.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1020157270 is about 31939.9009077987. The cubic root of 1020157270 is about 1006.6744427032.

Adding to 1020157270 its reverse (727510201), we get a palindrome (1747667471).

The spelling of 1020157270 in words is "one billion, twenty million, one hundred fifty-seven thousand, two hundred seventy".