1011020142 has 16 divisors (see below), whose sum is σ = 2205862272. Its totient is φ = 306369720.

The previous prime is 1011020137. The next prime is 1011020159. The reversal of 1011020142 is 2410201101.

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, 7659178 + ... + 7659309.

It is an arithmetic number, because the mean of its divisors is an integer number (137866392).

Almost surely, 2^1011020142 is an apocalyptic number.

1011020142 is an abundant number, since it is smaller than the sum of its proper divisors (1194842130).

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

1011020142 is a wasteful number, since it uses less digits than its factorization.

1011020142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15318503.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1011020142 is about 31796.5429252930. The cubic root of 1011020142 is about 1003.6599689517.

Adding to 1011020142 its reverse (2410201101), we get a palindrome (3421221243).

The spelling of 1011020142 in words is "one billion, eleven million, twenty thousand, one hundred forty-two".