1010121450 has 72 divisors (see below), whose sum is σ = 2712692448. Its totient is φ = 248639040.

The previous prime is 1010121449. The next prime is 1010121457. The reversal of 1010121450 is 541210101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1010121457) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5427 + ... + 45273.

It is an arithmetic number, because the mean of its divisors is an integer number (37676284).

Almost surely, 2^1010121450 is an apocalyptic number.

1010121450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1010121450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356346224).

1010121450 is an abundant number, since it is smaller than the sum of its proper divisors (1702570998).

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

1010121450 is a wasteful number, since it uses less digits than its factorization.

1010121450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39888 (or 39870 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1010121450 is about 31782.4078697634. The cubic root of 1010121450 is about 1003.3624976040.

Adding to 1010121450 its reverse (541210101), we get a palindrome (1551331551).

The spelling of 1010121450 in words is "one billion, ten million, one hundred twenty-one thousand, four hundred fifty".