1451202140 has 24 divisors (see below), whose sum is σ = 3207921360. Its totient is φ = 549929088.

The previous prime is 1451202133. The next prime is 1451202167. The reversal of 1451202140 is 412021541.

It is a happy number.

It is a super-2 number, since 2×1451202140² = 4211975302281159200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909097 + ... + 1909856.

It is an arithmetic number, because the mean of its divisors is an integer number (133663390).

Almost surely, 2^1451202140 is an apocalyptic number.

1451202140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451202140 is an abundant number, since it is smaller than the sum of its proper divisors (1756719220).

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

1451202140 is a wasteful number, since it uses less digits than its factorization.

1451202140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818981 (or 3818979 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1451202140 is about 38094.6471305353. The cubic root of 1451202140 is about 1132.1639011929.

Adding to 1451202140 its reverse (412021541), we get a palindrome (1863223681).

The spelling of 1451202140 in words is "one billion, four hundred fifty-one million, two hundred two thousand, one hundred forty".