1012251042 has 24 divisors (see below), whose sum is σ = 2392593840. Its totient is φ = 306742680.

The previous prime is 1012251041. The next prime is 1012251067. The reversal of 1012251042 is 2401522101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1012251041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2555992 + ... + 2556387.

It is an arithmetic number, because the mean of its divisors is an integer number (99691410).

Almost surely, 2^1012251042 is an apocalyptic number.

1012251042 is an abundant number, since it is smaller than the sum of its proper divisors (1380342798).

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

1012251042 is a wasteful number, since it uses less digits than its factorization.

1012251042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112398 (or 5112395 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1012251042 is about 31815.8929153340. The cubic root of 1012251042 is about 1004.0671168023.

Adding to 1012251042 its reverse (2401522101), we get a palindrome (3413773143).

It can be divided in two parts, 101225104 and 2, that added together give a triangular number (101225106 = T₁₄₂₂₈).

The spelling of 1012251042 in words is "one billion, twelve million, two hundred fifty-one thousand, forty-two".