1401250220 has 24 divisors (see below), whose sum is σ = 3037550208. Its totient is φ = 542419200.

The previous prime is 1401250187. The next prime is 1401250223. The reversal of 1401250220 is 220521041.

It is not an unprimeable number, because it can be changed into a prime (1401250223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129421 + ... + 1130660.

It is an arithmetic number, because the mean of its divisors is an integer number (126564592).

Almost surely, 2^1401250220 is an apocalyptic number.

1401250220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401250220 is an abundant number, since it is smaller than the sum of its proper divisors (1636299988).

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

1401250220 is a wasteful number, since it uses less digits than its factorization.

1401250220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260121 (or 2260119 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1401250220 is about 37433.2769070516. The cubic root of 1401250220 is about 1119.0218447410.

Adding to 1401250220 its reverse (220521041), we get a palindrome (1621771261).

The spelling of 1401250220 in words is "one billion, four hundred one million, two hundred fifty thousand, two hundred twenty".