1011430242 has 48 divisors (see below), whose sum is σ = 2266168320. Its totient is φ = 325684800.

The previous prime is 1011430237. The next prime is 1011430247. The reversal of 1011430242 is 2420341101.

It is an interprime number because it is at equal distance from previous prime (1011430237) and next prime (1011430247).

It is a super-2 number, since 2×1011430242² = 2045982268864357128, which contains 22 as substring.

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 (1011430247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399942 + ... + 402462.

It is an arithmetic number, because the mean of its divisors is an integer number (47211840).

Almost surely, 2^1011430242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011430242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133084160).

1011430242 is an abundant number, since it is smaller than the sum of its proper divisors (1254738078).

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

1011430242 is a wasteful number, since it uses less digits than its factorization.

1011430242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1011430242 is about 31802.9910857454. The cubic root of 1011430242 is about 1003.7956554385.

Adding to 1011430242 its reverse (2420341101), we get a palindrome (3431771343).

The spelling of 1011430242 in words is "one billion, eleven million, four hundred thirty thousand, two hundred forty-two".